Pedro's Pro Cassette Lockring Socket Tool Description: The Pro Cassette Lockring Socket is precisely machined from a solid piece of alloy tool steel and heat-treated to maximize strength and longevity. Designed for the professional mechanic for daily use or the home mechanic who appreciates quality. Removes and installs cassette lockrings from many of the major component manufacturers and certain types of disc brake lockrings. Features: Alloy tool steel socket is fully machined to precise tolerances for an exacting professional-level fit and optimally heat treated for maximum strength and longevity Features extra-long splines for superior engagement, quick-spin knurling, a 3/8` square drive for use with torque wrenches, and a 24mm external drive Fits all Shimano, Sram, SunRace, SunTour, Chris King, and other HG standard cassette lockrings, and disc brake lockrings Fits other similar fittings with 12 splines and 23.5mm outside diameter