TheSram GX Eagle XG-1275 12 Speed Cassette. Ride anywhere with this wide range XG-1275, 10- to 50-tooth Eagle™ cassette that provides the right gear. Fast on the flats. Control on the climbs. Dictate your own pace, anywhere. Only Eagle™ technology is the 1x drivetrain engineered for infinite freedom. FULL PIN™ technology uses lightweight, stamped steel cogs held together with high-strength stainless steel pins. The result: a cassette that’s light and strong. The open design similar to our X-DOME™ cassette aids in mud clearance, giving you cleaner shifting performance and longer component life. New X-GLIDE™2 improves both inboard and outboard shifting, as well as chain retention. Sram GX Eagle XG-1275 12 Speed Cassette Features WEIGHT: 450g MATERIAL: Stamped steel SPEED: 12 COLORS: Black RECOMMENDED CHAIN: Eagle™ chain only SPROCKETS ON SPIDER: 12 RECOMMENDED GROUP: GX Eagle™ COGS: 10-50t: 10t, 12t, 14t, 16t, 18t, 21t, 24t, 28t, 32t, 36t, 42t, 50t COMPATIBILITY: All levels of Eagle™ drivetrain systems