The SRAM PG-1170 cassette offers exceptional performance for any ride. The 1170 offers gearing options for climbs, descents, sprints and everything in between. The semi-spidered design offers low-weight performance without sacrificing strength or durability. The PG-1170 is also designed to provide quieter shifting performance over previous generations. SRAM offers exceptional performance that is hard to beat with the PG-1170.FeatureSemi-spidered design for reduced weight without reduced strength.PowerGlide compatibility for smooth, efficient shifting.Cassette designed for performance shifting and quieter operation over previous generations.SpecificationsColor: SilverMaterial: Steel Cogs, Aluminum SpiderSpeeds: 11-SpeedGear Range: 11-28TGears: 11,12,13,14,15,16,17,19,22,25,28Cassette Mount: 8/9/10/11-Speed SRAM/ShimanoWeight: 257g (42T)New, Never Used, OEM, This item is exactly as pictured and does not include retail packaging.SRAM