Shimano deore hg50 10 speed mtb cassettehyperglide hg series 10 speed compatible chain recommended for deore and tiagra drivetrains features high quality dyna sys 10 speed cassette close ratio gearing allows a more efficient use of energy through finer cadence control sprockets are cut away and drilled to reduce weight without reducing rigidity nickel plated finish offers hard wearing resistance to corrosion corrosion resistant steel cassette lockring for 10 speed hg x mtb chainsa 2 year war