Price: (as of – Details) Material:Metal, 100% brand new and high quality.Size:7 Speed-11-28T–11T-13T-15T-18T-21T-24T-28T. 7 Speed-11-32T–11T-13T-15T-18T-21T-24T-32T. 8 Speed-11-28T–11T-13T-15T-18T-20T-22T-24T-28T.Design:Silver plating,prevent metal oxidation,improve