SRAM wanted light weight, stiffness and durability, and they managed to produce all three with the Force D2 2x Direct Mount Chainring.Crisp and accurate front shiftsOne-piece construction for faster, smoother, more secure shiftingX-Range gives you more range and a smoother gear progression, so you're always in the right gearThe one-piece construction ensures that none of your effort goes to waste. A 13-tooth delta on all chainring pairs ensures precise shifting for any setup, as well as a less dramatic change in cadence during front shifts. And the technology we ve packed in makes this our longest-lasting chainring set ever.Chainring Size: 46/33T, 48/35T, 50/37TBolt Circle Diameter (BCD): Direct Mount (DM)Speed: 12Compat Yaw: n/aMaterial (Chainring): AluminiumColour (Chainring): Black