CENTOS / XLE CS-G100 (10 SP) - Model No.: CS-G100 11-28T Centos (Road) or CS-G100 11-42T XLE (Mountain). - Speed: 10 Speed. - Combination: ~10: 28, / 42 ~ 9: 24, / 36 ~ 8: 21, / 32 ~ 7: 19, / 28 ~ 6: 17, / 24 ~ 5: 15, / 21 ~ 4: 14, / 18 ~ 3: 14, / 15 ~ 2: 13, / 13 ~ 1: 11, / 11 - Cog Material: Steel. - Surface Finish: Chrome Plated. - Bracket Spider: Alloy carrier for 5 large sprockets. - Lock ring: Aluminum. - Weight: 255g (28T) & 415g (42T). - Recommended chain: HG 10-speed. - Compatible: Shimano.