SunRace CSMZ903 12 Speed Wide Ratio ST1910 11-51T Cassette, Silver,

- 11-13-15-17-19-21-24-28-33-39-45-51 Cogs - Chain Compatibility: 12 speed - Color: Silver (as pic. shown) - OEM package (This item is exactly as pictured and does not include retail package) Contents: 1 pc/pack - 11-13-15-17-19-21-24-28-33-39-45-51 Cogs - Spider Material: Aluminum / Red Anodized - Chain Compatibility: 12 speed - 7 Sprockets on 2 spider carriers - Sprocket Material 1st - 9th: Hi-Tensile Steel - Sprocket Material 10th, 11th and 12th: Lightweight Anodized A7075 Aluminum - Spacer Material: Aluminum Red Anodized - Compatible with 12 speed SRAM / Shimano long cage derailleur (If you would like to use medium or short rear derailleur, you have to purchase a Cassette adapter) - Color: Silver (as pic. shown) - Weight: Approx. 510g - OEM package (This item is exactly as pictured and does not include retail package) Contents: 1 pc/pack