Made from heat-treated tool steel for the ultimate in strength and lasting performance. Professional quality, precision sized for the perfect fit. Fits all Shimano, SunRace, Sachs and other 12 spline, 22.7mm diamater 5-10 speed freewheels and all Campagnolo cassette lockrings and Record, Chorus, Centaur, and Athena bottom brackets. Designed to work with Pedro's snap-channel Pro Socket Handle, a 24mm socket or wrench, or in a bench vise.
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