High quality Dyna-Sys 10-speed cassette with close ratio gearing which allows a more efficient use of energy through finer cadence control. The Sprockets are cut away and drilled to reduce weight without reducing rigidity and the nickel-plated finish offers hard wearing resistance to corrosion. Supplied with a corrosion-resistant steel cassette lockring. Designed for use with 10-speed HG-X MTB chains.High quality Dyna-Sys 10-speed cassetteClose ratio gearing allows a more efficient use of energy through finer cadence controlSprockets are cut away and drilled to reduce weight without reducing rigidityNickel-plated finish offers hard wearing resistance to corrosionCorrosion-resistant steel cassette lockringFor 10-speed HG-X chainsRatio: 11-36T