Cassette Giang Mars GA-R9 17 (17-25) GA-R9-21 (18-27)

9 speeds

17-18-19-20-21-22-23-24-25

18-19-20-21-22-23-24-25-27

nickel chromium

Shimano compatible

weight: 383g (17-25) 443g (18-27)