For Shimano. Sram. Campagnolo series~~
Model No.：
CT-SRE (for Sram eTap)
CT-SR (for Sram red/force/rival)
CT-SH9 (for Shimano 9250/9100/8150/8000)
CT-SH7 (for Shimano 7100)
CT-AXS (for Rival eTap AXS、Force eTap AXS、RED eTap AXS)
CT-F1 (for Sram force1)
CT-FRP. (for Sram XPLR)
CT-RX10 (for Shimano GRX810)
CT-RX12 (for Shimano GRX812)
CT-XT81 (for Shimano XT/XTR 1x12)
CT-CPY (for Campagnolo 11s)
#System
- Sram：red, force, rival, AXS
- Shimano：Dura-Ace, Ultegra, 105
- Campagnolo：super record, record, chorus.
#tooth number
- 12t+16t (Narrow-Wide Tooth)
- Customized combination
#Bearings
- Stainless Steel Ceramic
- Steel
