• Material: 7075 4mm Aluminum.Hyper accurate, fully CNC-machined.

•Compatibility: SHIMANO SRAM 10s 11s and 12s single chainring setups.

•.Track Bike single-Rings // 5-Arm BCD144 design

• Available versions: 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62T （1/2 x 1/8）

• Finishing: hard anodized. Blast Black