10-speed Wide Ratio- 11-13-15-18-21-24-28-34-40-46T Cogs- SRAM MTB derailleurs are generally compatible (check its chain wrap capability)- Shimano derailleurs require a longer B-tension screw- Compatibility: Shimano or Sram compatible freehubs- Shimano / SRAM mid or long cage derailleur only (check its specs for chain wrap capability)-For Shimano HG splined freehubs- 6 Sprockets on 2 Alloy Spider CarriersColor: Black (as pic. shown)WEight: 503g- OEM package (This item is exactly as pictured and does not include retail package)Contents: 1 pc/pack