Machined engineering-grade Delrin inserts for adapting bottom brackets to a different type of crankset spindle.
- Adapts 24mm Spindle Cranks (Shimano, FSA, etc.) to work on Pressfit 30 frames
- Delrin adaptors fit between bearings and crank spindle
- Not compatible with SRAM PF30 bottom brackets that use a thin plastic reducer instered into the bearings