Shimano 105 5700 10 speed road cassettehigh performance 10 speed 105 road cassette stable better shifting performance and feeling variety of gear combination features hyperglide sprockets have a computer designed tooth configuration with contoured shift gates resulting in a crisp smooth shift even under load close ratio gearing allows a more efficient use of energy through finer cadence control largest sprockets are mounted on a lightweight alloy carrier to reduce weight and increase rigid