Originally Posted by
Jeff Wills
I've always used my Park FR-1 freewheel tool on my Shimano cassette lockrings. As above, it works fine if it's held on by the QR skewer. FWIW: the Campy cassette lockring tool also fits their cartridge bottom brackets.
Hmm, I went down into the basement to double-check my statement. I can't get my FR-5 into the splines of an MF-Z012 or MZ-TZ20 freewheel, nor can I get the FR-1 into any of my HG50 or HG70 (7-speed in all cases) lockrings. Did Park used to make these tools a little looser fit in the past or something?