Sram: FULL PIN The new 10-52 Eagle cassette for riders who prioritize all day function over anything else. With an expanded, 520-percent gear range giving riders 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 our X-DOME™ cassette that aids in mud clearance, giving riders crisp shifting performance and longer component life.FEATURES520-percent gear range utilizing the industry standard XD™ hub driver.Light and strong FULL PIN™ technology similar to X-DOME™ bringing true 1x gear range to more riders and builds.Lunar and black colorway makes the XG-1275 cassette right at home on any build. SPECIFICATIONSSpeed (CS): 12sGearing: 10-52tCog finish (Cassette): BlackTechnology (Cassette): XGCog sizes: 10-52t:10,12,14,16,18,21,24,28,32,36,42,52Driver body interface: XD