Shimano compatible, rear cassette, ideal for Road, Hybrid and weekend trail MTB bikes. Features: Compatible with most 9 speed gear systems (excluding Campagnolo) Corrosion resistant steel Nickel plated for longevity Sprocket range - 1 1t, 13t, 15t, 17t, 19t, 21t, 24t, 28t, 34t Weight: 325g