Sram&';s premier X-Range gearing, which utilizes tight jumps between chainrings and a 12-speed, wide range, 10-tooth start cassette, is now available for Rival. This includes new cassettes that feature smooth, precise shifting in ranges that cover road, gravel and everything in between X-Range gearing gives you more range and a smoother gear progression, so you&&';;re always in the right gear Nickel chrome plating for quiet and durability FULL PIN construction for durability and light weight Designed to work with an XDR driver body Speed: 12 speed Gearing: choose; 10-30t, or 10-36t Cog Finish: Silver