Compatibility for Shimano and Campagnolo without an adapter shim for screw install
Compatibility for SRAM with an adapter shim for screw install
Material：Made from 7075AL
Teeth available：10T and 11T
Bearing：Ceramic type
Colours available：Black,Blue,Red,Gold,Green and Silver anodized.
*9 / 10 Speed type: With Red Centre Caps
**Campagnolo 11 Speed type: With Black Centre Caps
***Shimano 11 Speed type:Centre Caps being colours matched to Pullies
Weight：9g / pc