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