Use this BSA threaded BB to convert BSA threaded bottom bracket to accept a 30mm axle crank

This 30mm External BSA bearing is the option you need to fit so you can use 30mm axle cranks in your standard BSA Threaded Frame.

- New advanced non contact Labrynth seals give buttery smooth spinning with unparalled protection against dust, water and mud
- Suitable for both Road and MTB using the same bearing
- Only 90grams