Next tool acquisition - torque wrench
#1
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Thread Starter
Next tool acquisition - torque wrench
Hi all:
I posted earlier this week that this pandemic has convinced me I need to become a more competent mechanic. When I had a car, I could do basic things like oil changes, spark plug changes, tire rotations and some exhaust work (that didn't include welding). So while I'm certainly not bold enough to call myself anything approaching competent, I am fairly comfortable with tools. Generally, I need to do/see things once or twice and then I have a familiarity to be self-sufficient. Anyway, I appreciate you all's patience with a bike wrench noob. I know I'll have more questions moving forward. I've used the search feature, but some things may have been addressed long ago and could benefit from a fresh discussion. I use Sheldon's site and Zinn's book for reference material.
So. Torque wrenches. First off, I have a Craftsman that is fairly husky - it goes from around 40 N m through nearly 400 N m. I used it for various tasks on my car when I had one, notably torquing lug nuts. As far as my bike goes, I use it for the cassette locking ring -- it's a 1/4" drive and I have a shimano lock ring remover that fits, and I think the scale of this will be suitable for BB work when I get to that. But I *think* that'll be about it for this torque wrench as far as a bike goes. I need something for the lesser amounts.
I know lots of folks get those pre-set torque tools that Park and Pedros offer, but I think I'd like to avoid those and instead get a smaller wrench that covers all of the remaining range I'm likely to need.
Both Pedros and Park have offerings. From Park, for example, I could get the TW-5.2 ratchet and the SBS-1.2 socket and bit set. In total, I'd spend around US $160. Neither one of these items are available from Park just now. I haven't looked elsewhere, but I assume would be similar.
Pedros has the Demi Torque and an 18-piece bit set which would set me back around US $155 for the two - substantially the same as the Park option. I assume these are both in stock as the website doesn't say otherwise.
Finally, I'm a big fan of Wera tools and they have a torque and bit (16 pcs) set all in one nice package (https://products.wera.de/en/torque_t..._torque_1.html). The site doesn't list a price but Wera commands a premium. I don't mind spending money on good tools that will last a lifetime. But I can't seem to find this set anywhere. Amazon lists it, but does't have a price and it doesn't seem like it's available there.
I'm also considering getting a Wera stand-alone torque wrench and getting the smallest bit set that includes what I need and add as I might need to (for other repairs I might encounter outside of my bike). As far as what I need that requires being torqued properly, I think would need 4,5,6,8mm hex and T-25. Does that about cover it?
So how would you all approach this? What do you keep in your toolbox for torque? I have talked to plenty of LBS mechanics who state they never torque, they just make it "good-n-tight". I can appreciate that, but I'm not looking to be talked out of this. I'm the kind of maniac that if a torque setting is indicated, I. WILL. USE. IT.
Final question, I swear: the rotors I currently have call for 6.2 N m of torque. I don't think the wrenches I've seen have a graduated scale that allows for that precision - they're usually a bit more "coarse" in their adjustments. It's going to drive me crazy if I can't dial that in directly - so would I torque to 6 or 7 N m??
Thanks for your consideration.
I posted earlier this week that this pandemic has convinced me I need to become a more competent mechanic. When I had a car, I could do basic things like oil changes, spark plug changes, tire rotations and some exhaust work (that didn't include welding). So while I'm certainly not bold enough to call myself anything approaching competent, I am fairly comfortable with tools. Generally, I need to do/see things once or twice and then I have a familiarity to be self-sufficient. Anyway, I appreciate you all's patience with a bike wrench noob. I know I'll have more questions moving forward. I've used the search feature, but some things may have been addressed long ago and could benefit from a fresh discussion. I use Sheldon's site and Zinn's book for reference material.
So. Torque wrenches. First off, I have a Craftsman that is fairly husky - it goes from around 40 N m through nearly 400 N m. I used it for various tasks on my car when I had one, notably torquing lug nuts. As far as my bike goes, I use it for the cassette locking ring -- it's a 1/4" drive and I have a shimano lock ring remover that fits, and I think the scale of this will be suitable for BB work when I get to that. But I *think* that'll be about it for this torque wrench as far as a bike goes. I need something for the lesser amounts.
I know lots of folks get those pre-set torque tools that Park and Pedros offer, but I think I'd like to avoid those and instead get a smaller wrench that covers all of the remaining range I'm likely to need.
Both Pedros and Park have offerings. From Park, for example, I could get the TW-5.2 ratchet and the SBS-1.2 socket and bit set. In total, I'd spend around US $160. Neither one of these items are available from Park just now. I haven't looked elsewhere, but I assume would be similar.
Pedros has the Demi Torque and an 18-piece bit set which would set me back around US $155 for the two - substantially the same as the Park option. I assume these are both in stock as the website doesn't say otherwise.
Finally, I'm a big fan of Wera tools and they have a torque and bit (16 pcs) set all in one nice package (https://products.wera.de/en/torque_t..._torque_1.html). The site doesn't list a price but Wera commands a premium. I don't mind spending money on good tools that will last a lifetime. But I can't seem to find this set anywhere. Amazon lists it, but does't have a price and it doesn't seem like it's available there.
I'm also considering getting a Wera stand-alone torque wrench and getting the smallest bit set that includes what I need and add as I might need to (for other repairs I might encounter outside of my bike). As far as what I need that requires being torqued properly, I think would need 4,5,6,8mm hex and T-25. Does that about cover it?
So how would you all approach this? What do you keep in your toolbox for torque? I have talked to plenty of LBS mechanics who state they never torque, they just make it "good-n-tight". I can appreciate that, but I'm not looking to be talked out of this. I'm the kind of maniac that if a torque setting is indicated, I. WILL. USE. IT.
Final question, I swear: the rotors I currently have call for 6.2 N m of torque. I don't think the wrenches I've seen have a graduated scale that allows for that precision - they're usually a bit more "coarse" in their adjustments. It's going to drive me crazy if I can't dial that in directly - so would I torque to 6 or 7 N m??
Thanks for your consideration.
#2
Senior Member
Sometimes people relying fully on the torque wrench strip bolts. That could happen if you're working with a generous application of anti-seize and the torque specification is for dry fastening. Anti-seize can increase clamping force for a given torque rating by up to 50%, and more commonly about 30%.
Also to avoid cluttering the board elsewhere, can thread watchers tell me why some thru axles like the HardLite say torque of 8-10 NM and others say 9-13.5 NM like the Maxle Stealth? How do they figure out these torque ratings since the material of these axles is the same aluminum and they seem perfectly equivalent except coming out of different factories with different names on them.
Also to avoid cluttering the board elsewhere, can thread watchers tell me why some thru axles like the HardLite say torque of 8-10 NM and others say 9-13.5 NM like the Maxle Stealth? How do they figure out these torque ratings since the material of these axles is the same aluminum and they seem perfectly equivalent except coming out of different factories with different names on them.
Last edited by RowdyTI; 08-21-20 at 12:26 PM.
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#3
Newbie
Thread Starter
I am getting myself a CDI TorqControl TLA28NM. It goes from 2 to 8 NM. I prefer it because it has the form of a mini tool so over time you can get a feel for various torque levels, and it doesn't have too much leverage like a usual torque tool so you're not 100% relying on the tool. A tool like this gives you a better feel for what's actually going on. Sometimes people relying fully on the torque wrench strip bolts. That could happen if you're working with a generous application of anti-seize and the torque specification is for dry fastening. Anti-seize can increase clamping force for a given torque rating by up to 50%, and more commonly about 30%.
Thanks for suggesting a low-cost alternative!
Edit: I see on a google search I did, it comes with some bits.
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#4
Banned
I'd* go expensive on the 1/4" drive, beam on the 3/8" , probably wont need the 1/2" drive for bicycles.
*though after 40 years, a good sensitivity to 'how tight , is right' is developed..
but to tell someone else 'how tight?' that's where the standardized numbers come in..
...
*though after 40 years, a good sensitivity to 'how tight , is right' is developed..
but to tell someone else 'how tight?' that's where the standardized numbers come in..
...
Last edited by fietsbob; 08-20-20 at 07:33 PM.
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this guy works well and its s not too bulky. https://www.amazon.com/gp/product/B0...0?ie=UTF8&th=1
#6
Senior Member
My favorite I've used is the Effetto Giustaforza II torque wrench, which is 2-16 nm. This is my personal wrench which I use a lot. Goes around $170 for a wrench with bits: https://www.probikekit.com/bicycle-t...=TOP10_220518_. My favorite high end wrench that covers like all the values you're likely to need is the Topeak D-TORQ WRENCH DX but it is hella expensive. I have a cheap Park beam-style wrench in addition to my Mariposa for the uncommon times that I feel I need precise torque for high values. I do wish I had something that was more acurate/precise up to about 30nm for some suspension bolts.
I've used the Park wrenches in a commercial setting a lot, they're fine but not my favorite. Pedros looks similar, but I haven't used it.
Also I'm a professional mechanic; don't trust anyone who doesn't use a torque wrench with regularity. Real mechanics use real tools. If I'm being honest, there are a number of fasteners which are relatively insensitive to torque value and I do not use a torque wrench on absolutely every one of them, but you can bet your ass I'm using a torque wrench for any kind of pinch bolt over carbon (or really other materials except for maybe steel steer tubes), any suspension bolt, and anytime I have any doubt. With efficient work practices you do not save any time and money refusing to use torque wrenches when appropriate.
I've used the Park wrenches in a commercial setting a lot, they're fine but not my favorite. Pedros looks similar, but I haven't used it.
Also I'm a professional mechanic; don't trust anyone who doesn't use a torque wrench with regularity. Real mechanics use real tools. If I'm being honest, there are a number of fasteners which are relatively insensitive to torque value and I do not use a torque wrench on absolutely every one of them, but you can bet your ass I'm using a torque wrench for any kind of pinch bolt over carbon (or really other materials except for maybe steel steer tubes), any suspension bolt, and anytime I have any doubt. With efficient work practices you do not save any time and money refusing to use torque wrenches when appropriate.
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So how often do you guys calibrate your torque wrenches?
That is one of the advantages of the beam type wrenches, they tend to maintain their calibration.
That is one of the advantages of the beam type wrenches, they tend to maintain their calibration.
#8
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The vast majority of fasteners will fall below 10Nm with a couple of notable exceptions. The main exception is pedals and crank bolts. Square taper and some splined cranks take about 40Nm, and Shimano pinch bolts take about 12Nm,
My nice torque wrench is a 2-10Nm, a less expensive mid range, and a nicer SK 40-200Nm that I originally bought for automotive use.
if I had to live without one of those, it would be the big one. The “good and tight” standard works for pedals and cranks, and the problem with those is usually undertorquing.
fietsbob gives good advice to spend more at the bottom end of torque ranges. If you like Wera, they make the Syntace torque wrench, or at least they did, and I believe that they still do. EDIT: I checked the Syntace website and they clearly state that their wrench is built by Wera.
KCTool is the US distributor for Wera, and the bicycle tool kit is here: https://www.kctoolco.com/wera-004180...rque-1-16-pcs/ Even on sale is is over $300. There are better options for the price in my opinion. I love my Wera screwdrivers and the mini-bit ratchet is one of my favorite tools, so you can’t go wrong if you don’t mind spending the money.
There are two camps here when it comes to tools. The first is the “a skilled mechanic can make do with a screwdriver and a rock, you don’t need [tool you are considering here]. I fall in the second camp which despises low quality tools, believes that good tools will last forever, and prefers to use a purpose-built tool whenever possible.
My nice torque wrench is a 2-10Nm, a less expensive mid range, and a nicer SK 40-200Nm that I originally bought for automotive use.
if I had to live without one of those, it would be the big one. The “good and tight” standard works for pedals and cranks, and the problem with those is usually undertorquing.
fietsbob gives good advice to spend more at the bottom end of torque ranges. If you like Wera, they make the Syntace torque wrench, or at least they did, and I believe that they still do. EDIT: I checked the Syntace website and they clearly state that their wrench is built by Wera.
KCTool is the US distributor for Wera, and the bicycle tool kit is here: https://www.kctoolco.com/wera-004180...rque-1-16-pcs/ Even on sale is is over $300. There are better options for the price in my opinion. I love my Wera screwdrivers and the mini-bit ratchet is one of my favorite tools, so you can’t go wrong if you don’t mind spending the money.
There are two camps here when it comes to tools. The first is the “a skilled mechanic can make do with a screwdriver and a rock, you don’t need [tool you are considering here]. I fall in the second camp which despises low quality tools, believes that good tools will last forever, and prefers to use a purpose-built tool whenever possible.
Last edited by aggiegrads; 08-20-20 at 08:38 PM.
#9
Senior Member
How about this one? https://www.kctoolco.com/wera-074705...p-screwdriver/
That should do most of your needs and looks like a good tool.
Regarding calibration, I read:
You're going to get more variation than that depending on what you use on the threads and how much.
Also read:
What reasons could those be that people get into trouble using torque wrenches?
I tend to think a good mechanic should be able to feel what's appropriate. In another thread I called the bikes most of us ride precision instruments, and someone begged to differ on that point. I'm also not convinced there's any rocket science when bike mfg's come up with their recommended torque figures. For example, the HardLite thru axle says 8 to 10 and the Maxle Stealth says 9 to 13.5 NM. As far as I can tell, they're identical hardware except for minor cosmetic differences.
Check out this thread: https://www.bikeforums.net/bicycle-m...que-wench.html
Wera 7443 4.0 - 8.8 Nm Adjustable Torque Pistol Grip Screwdriver
That should do most of your needs and looks like a good tool.
Regarding calibration, I read:
You don't need an expensive torque wrench. +/-5% accuracy is plenty good enough for bicycle use.
Also read:
IMO a torque wrench isn't necessary, but it may help someone who is hamfisted and lacks touch. It's pretty easy to feel when fasteners are properly tightened as the torque will begin to ramp up steeply as you approach max tightness.
I also subscribe to the notion of functional tightness, or the idea that clamps should be tight enough to do the job, and any more is just added stress on the parts. So for example, I tighten seatposts so they don't slide or allow the post to twist under normal conditions (plus a margin for error). That may, and should require less torque than what the hardware can take, and can easily enough be gauged by experience, or a simple twist test.
OTOH - I've seen far too many cases where blind reliance on a torque wrench has gotten folks into trouble for a number of reasons. So even if you opt to buy and use a torque wrench, you still need to retain a sense of what you're doing.
I also subscribe to the notion of functional tightness, or the idea that clamps should be tight enough to do the job, and any more is just added stress on the parts. So for example, I tighten seatposts so they don't slide or allow the post to twist under normal conditions (plus a margin for error). That may, and should require less torque than what the hardware can take, and can easily enough be gauged by experience, or a simple twist test.
OTOH - I've seen far too many cases where blind reliance on a torque wrench has gotten folks into trouble for a number of reasons. So even if you opt to buy and use a torque wrench, you still need to retain a sense of what you're doing.
I tend to think a good mechanic should be able to feel what's appropriate. In another thread I called the bikes most of us ride precision instruments, and someone begged to differ on that point. I'm also not convinced there's any rocket science when bike mfg's come up with their recommended torque figures. For example, the HardLite thru axle says 8 to 10 and the Maxle Stealth says 9 to 13.5 NM. As far as I can tell, they're identical hardware except for minor cosmetic differences.
Check out this thread: https://www.bikeforums.net/bicycle-m...que-wench.html
Last edited by RowdyTI; 08-20-20 at 09:09 PM.
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#10
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I would vote for Wera. I do like their stuff. If I could swing it I would go with the Snap-On digital torque wrench, that one is super duper nice and satisfying in the hand especially the larger one for big torque jobs. I am currently using the Effetto Mariposa Guistaforza II Anniversary torque wrench and it is nice but I don't like the super long bits. I may end up either going for the Topeak Digital or the Wera wrench at some point but currently my EM is just fine.
Don't have time for cheap amazon tools and honestly the guessing (because my hands are calibrated) can be off by a lot sometimes. Granted yes I use my "calibrated" hands frequently on certain things but I much prefer the torque wrench when possible. Better to be safe than sorry and especially with carbon components and modern lighter and lighter weight stuff it is good to be safe and secure.
We were installing a car hitch and it needed a lot of torque for a bolt and we cranked on it hard and it was still off by 50nm or so. It was quite ridiculous.
Don't have time for cheap amazon tools and honestly the guessing (because my hands are calibrated) can be off by a lot sometimes. Granted yes I use my "calibrated" hands frequently on certain things but I much prefer the torque wrench when possible. Better to be safe than sorry and especially with carbon components and modern lighter and lighter weight stuff it is good to be safe and secure.
We were installing a car hitch and it needed a lot of torque for a bolt and we cranked on it hard and it was still off by 50nm or so. It was quite ridiculous.
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Forget the advice so far and get a modestly priced digital torque adapter, such as Performance Tool M206. I combine it with different adapters to get a reading on any torque I apply that is suspect for one reason or another. You change units or mode of operation by pressing a button. Yes people give advice in good faith but they were gaining their torque wrench experience in another epoch.
#12
Full Member
this guy works well and its s not too bulky. https://www.amazon.com/gp/product/B0...0?ie=UTF8&th=1
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#13
Newbie
Thread Starter
I know - this does concern me. Often times, the answer me with a slight smirk on their face as if to suggest "torque wrenches are for rookies". I actually don't think it's cool as I'm of the opinion that if there is a torque setting printed on the part or in the documentation it's there for a reason and best be used!
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#14
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Great comments! Thanks all - I hope to make a decision as to what direction I want to go soon.
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I would buy a 1/4" beam torque wrench for working on bikes. Accurate and hold their calibration, inexpensive as well. I use a 3/8 beam as well as clicks on cars, and it also comes in handy to check the calibration of the other click torque wrenches.
Something like this
https://www.amazon.com/Titan-23140-N...%2C178&sr=8-13
Something like this
https://www.amazon.com/Titan-23140-N...%2C178&sr=8-13
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If you aren't calibrating your tools than how do you know whether the torque you are applying is any more accurate than the mechanic doing it by feel?
Also realize that most torque specs are listed based upon dry untreated threads. There are some exceptions. If you lube the fasteners than the torque setting needs to be adjusted.
#17
Full Member
There are many different sellers with this one sold under different names.
I've had it for years and it works great, and it can usually be bought for ~$50.
The only two things that I need it for that are out of its range are cassettes at 40Nm, & my crank at ~50Nm.
For those two I've got a 35 year old 1/2 drive click-type wrench.
I've had it for years and it works great, and it can usually be bought for ~$50.
The only two things that I need it for that are out of its range are cassettes at 40Nm, & my crank at ~50Nm.
For those two I've got a 35 year old 1/2 drive click-type wrench.
#18
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Forget the advice so far and get a modestly priced digital torque adapter, such as Performance Tool M206. I combine it with different adapters to get a reading on any torque I apply that is suspect for one reason or another. You change units or mode of operation by pressing a button. Yes people give advice in good faith but they were gaining their torque wrench experience in another epoch.
Anyone have any experience?
#19
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I've considered one of these. I do have 2 torque wrenches already so I would think that this digital gauge could also be used to calibrate them. I realize that they are not a primary standard so it would probably be a good idea to check them as well, but I would assume that digital gauges are less sensitive to change than analog spring tension wrenches.
Anyone have any experience?
Anyone have any experience?
#20
Senior Member
You're confusing calibration with accuracy. Calibration removes the inaccuracies that creep in over time. The ±5% listed accuracy is only guaranteed if the unit is properly calibrated on a periodic basis. Most manufactures recommend yearly calibration schedules. Click type torque wrenches drift more readily and require more frequent calibration schedules than the more simple beam type units.
Regarding working by feel, again, it's much easier to go by feel when working with low torque bolts up to 12 NM.
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We have a calibration lab at work. Every tool has a calibration date that needs to be checked before use. Use to work in a nuc plant and those guys were fanatical about calibrated tools.
For home use I have beam type wrenches I use on my cars and very rarely on a bike. Can't say I've ever had them calibrated. But I'm the type who doesn't worry much about torque specs on bikes.
By saying an accurate calibration isn't necessary for bike work you are essentially saying the same thing that I am.
For home use I have beam type wrenches I use on my cars and very rarely on a bike. Can't say I've ever had them calibrated. But I'm the type who doesn't worry much about torque specs on bikes.
By saying an accurate calibration isn't necessary for bike work you are essentially saying the same thing that I am.
#22
aka Phil Jungels
I'd* go expensive on the 1/4" drive, beam on the 3/8" , probably wont need the 1/2" drive for bicycles.
*though after 40 years, a good sensitivity to 'how tight , is right' is developed..
but to tell someone else 'how tight?' that's where the standardized numbers come in..
...
*though after 40 years, a good sensitivity to 'how tight , is right' is developed..
but to tell someone else 'how tight?' that's where the standardized numbers come in..
...
#23
Senior Member
https://www.amazon.com/Venzo-2-10NM-.../dp/B00V4CQEGW
^^^^ This is what I use for stems, seat posts, stuff like that.
^^^^ This is what I use for stems, seat posts, stuff like that.
#24
Senior Member
https://www.amazon.com/Venzo-2-10NM-.../dp/B00V4CQEGW
^^^^ This is what I use for stems, seat posts, stuff like that.
^^^^ This is what I use for stems, seat posts, stuff like that.
https://www.amazon.com/Bicycle-Torqu...ct_top?ie=UTF8
Every single one of the written reviews is highly positive, and it's not much money.