The Eagle GX 10- 50 tooth casstte from Sram features Full Pin technology that uses lightweight, stamped steel cogs held together with high-strength stainless steel pins. The result is a cassette that’s light & strong. The open design similar to SRAMs X-DOME™ cassette that aids in mud clearance, giving you cleaner shifting performance & longer component life. New X-GLIDE™2 improves both inboard & outboard shifting, as well as chain retention. Available in Black