Model Set - 11T + 11T or Set - 11T + 12T (for 11 sp. with standard cage) or Set - 11T + 14T (for 11 sp. XT rear derailleur with standard cage) or Set - 11T + 16T (for 11 sp. with GARBARUK cage) or Set - 14T + 14T (for 12 sp. with standard cage) or Set - 14T + 16T (for 12 sp. with GARBARUK cage) Made from 7075-T651 Aluminum Alloy Surface coating Anodizing Made with CNC milling Weight, grams17 (Set - 11T + 12T),18 (Set - 11T + 14T),20 (Set - 11T + 16T), 21 (Set - 14T + 14T) Compatible rear derailleurs(11T+12T): SLX RD-M7000-11-GS, XTR RD-M9000. (11T+14T): XT RD-M8000. (14+14T): SLX RD-M7100-SGS, XT RD-M8100-SGS, XTR RD-M9100-SGS. (11+16T): All Shimano derailleurs equipped with Garbaruk cage. Color Black or Blue or Gold or Green or Orange or Red or Silver or Violet