Park Tool FR-5.2H Cassette Lockring Tool
A fast and convenient tool to remove and install 12-spline Shimano® / SRAM®-style cassette lockrings, as well as similar lockrings on rotor discs. The FR-5.2H features a modified FR-5.2 tool that allows use without removing most quick-release skewer nuts. The removable, threaded steel handle makes it possible to replace a worn or damaged head.