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Park Tool FR-5H Cassette Lockring Remover Tool
Fast and convenient tool to remove and install 12-spline cassette lockrings
Also works on similar lockrings on rotor discs
Large hole allows use without removing most QR nuts
Shimano/SRAM compatible
Add to your maintenance arsenal with the Park Tool Lockring Tool with Handle. Fast and convenient, this tool helps you remove and install 12-spline Shimano/SRAM-style cassette lockrings, as well as similar lockrings on rotor discs. This tool features a modified FR-5 tool that enables you to use it without removing most quick-release skewer nuts. Also, the removable, threaded steel handle makes it possible for you to replace worn-out or damaged heads.