We wanted light weight, stiffness, and durability, and we got all three. The Force 2x chainring kit is a single integrated unit so no effort is wasted, transferring all your power to the pedals. FEATURES: Crisp and accurate front shifts One-piece construction for faster, smoother, more secure shifting X-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear. Available in 46/33T, 48/35T, or 50/37T SPECS: Chainring Size: 46/33T, 48/35T, 50/37T Bolt Circle Diameter (BCD): Direct Mount (DM) Speeds: 12 Compat – Yaw: n/a Material (Chainring): Aluminum Color (Chainring): Black Chainring Offset: n/a