SunRace CSRS0 10 Speed Road CassetteThis superb 10 speed cassette is specifically designed for MTB use as it delivers fast and reliable shifting performance all across the mountain. Its alloy spider is robust and immensely durable, making it tough enough for the most aggressive off-road rides. This is an ideal choice of upgrade for replacing your old or worn-out existing model.Features: Alloy Spider Designed for MTB use 10 speedBuy SunRace Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.