SRAM XG-1275 Eagle Cassette - 12-Speed, 10-52t, For XD Driver, Black, C1The XG 1275 Eagle cassette is for riders who prioritize all day function over anything else. With both 520% (10 52t) and 500% (10 50t) gear range available, riders have more ability to spin and recover on the burliest climbs. Featuring FULL PIN technology that uses lightweight, precision engineered steel cogs permanently connected with high strength stainless steel pins. An open design similar to SRAM's X DOME cassette that aids in mud clearance,