Use these threaded BB to convert ITA threaded bottom bracket to accept a 30mm Crank.(3D+)

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

- New advanced non contact Laberynth 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