Designed as part of the Force AXS groupset, the SRAM Force E1 2x THREAD MOUNT Chainring Kit are part of an innovative system to minimize weight while maximizing stiffness and power meter accuracy. Quickly swap ring sizes with an easy to use tool. Features: Thread Mount design is light, stiff, and accurate Available in 46/33, 48/35, and 50/37 chainring combos Compatible with all road Flattop chains SRAM Thread Mount Chainring Removal Tool required for installation Product Specifications: Chainring Size 46/33T, 48/35T, 50/37T Bolt Circle Diameter (BCD) Thread Mount Speeds 12 Compat - Yaw n/a Material (Chainring) Aluminum Color (Chainring) Black Chainring Offset n/a Vendor Item No: 00.6218.063.000 (46/33T) 00.6218.063.001 (48/35T) 00.6218.063.002 (50/37T) Buy On Amazon Buy On Amazon Buy On Amazon