SRAM XG-1275 Eagle 12sp Cassette. Features: Full Pin technology uses lightweight, stamped steel cogs held together with high-strength stainless steel pins Open design aids in mud clearance giving you cleaner shifting performance and longer component life X-GLIDE 2 improves both inboard and outboard shifting, as well as chain retention The XG-1275 cassette meets durability requirements for E-MTB applications Specs: Model:XG-1275 Freehub Type:XD Speed:12 Range:10-52 Cogs:10,12,14,16,18,21,24,28,32,36,42,52 Color:Black Weight:-