Hey, rather than make a new thread - since I've got you all here..
Quick question: I've got these two freewheels/cogs here in my bin - the 17t and 18t. Looking at what tool I need to play around with these - one has 4 notches, the other has 6. Not sure about the one on the bike--will have to pull the wheel forward later and look. I'm looking at this:
https://www.parktool.com/product/freewheel-remover-fr-6
But I'm not seeing a tool for a freewheel with 6 notches - is that unusual?