The Shimano Claris CS-HG50 Cassette is an 8 Speed, 11-34t cassette with a nickel plated finish for corrosion resistance, and a steel lockring. Claris HG50 cassettes ensure a durable and low maintenance system that's easy-to-operate, with accurate and light-action shifting for Shimano 8-speed drivetrains. Nickel plated finish for corrosion resistance Steel lockring