Joined: Jun 2013
Posts: 4,094
Likes: 2
From: Bozeman
Bikes: 199? Landshark Roadshark, 198? Mondonico Diamond, 1987 Panasonic DX-5000, 1987 Bianchi Limited, Univega... Chrome..., 1989 Schwinn Woodlands, Motobecane USA Record, Raleigh Tokul 2
No, you don't need one for a cassette. Turn it with a 12 inch wrench till it stops turning with reasonable pressure. (Don't put your weight on it.) It clicks when you tighten it. Generally it'll tighten with a bunch of clicks, then get caught on one. I'll usually go one or two more clicks then call it good.