Tool Park Tool FR-5.2G Cassette Lockring 5mm Guide Pin Black Park Tool - A Lasting Legacy Cassette installation and removal is quick and easy with the help of Park Tool. A version of Park Tool's dependable FR-5.2, the FR-5.2G comes with an added 5mm guide pin for added stability when removing lockrings from quick-release hubs. Designed for 12 spline 23.4mm diameter tool fittings - the most common tool fitting found on 7-12 speed cassette lockrings, and can also be found on some disc brake lockrings. Key Features Heat treated alloy tool steel construction Fits 12-spline cassette lockrings from Shimano, SRAM, SunRace, SunTour, Chris King and others Fits most disc brake lockrings with 12 internal splines from Shimano and other brands Hex-shaped base of tool fits 1" (25.4 mm) socket or wrench 5mm guide pin stabilizes tool when used with quick-release hubs Specifications Part Number 556434 Color Black Size One size Model Year 2026 Weight 113g Material Components Cro-Moly