Check the listing for details. Pro Cassette Lockring Socket with Pin. Condition: New. Listed at 39.99 USD. The Pro Cassette Lockring Socket is designed with the professional mechanic in mind, the extra-deep splines ensure engagement while the quick spin knurling provides speed and control. Backed by Pedro's lifetime warranty.Features a unique dual function design with 5mm pin and removable magnetic 12mm pin. 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, a 24mm external drive for use with Pedro's Pro Socket Handle and pedal wrenches, and a 19.8mm internal diameter with 21.5mm depth. Fits all , SRAM, SunRace, SunTour, Chris King, and other HG SHIPS TODAY! Order before 1:30PM EST, M - F, and this item ships the same day! HAVE A QUESTION?Expert customer service by bike experts! A Real Brick And Mortar Retail Bicycle Shop with people you can talk to! Contact Us! (9-5 Mon-Fri, 12-4 Sat & Sun EST) Chat With Us