The solid 7-speed cassette offers Hyperglide technology and is available with 12-28 and 12-32 sprocket ratio. HG cassettes are also compatible with Shimano IG chains and they care for silent and fluently gear shifting.
Hyperglide sprockets guide the chain quickly and directly to the next sprocket without overdrive
Steel coating – manganese phosphate
Ratio – 12-14-16-18-21-24-28