Park Tool Cassette Lockring Tool

Park's FR-5 Cassette Lockring Tool fits most cassette lockrings from Shimano, SRAM, SunTour, Chris King, and SunRace. Made from heat-treated tool steel, the FR-5 features an extra-long splined body to prevent slippage and can also be used to remove and install Shimano disc brake rotors. The FR-5 requires the use a chainwhip tool (sold separately) to prevent the cassette from turning during lockring removal.