- Only for Praxis M30 spindle cranks being installed on a BSA/Eng. threaded frame
- 68mm Road version / 68/73mm MTB setup
- 30mm Drive bearing / 28mm NonDrive bearing | cartridge bearings
- Ceramic version is Grade 5 / ABEC 5 rating
- Forged & machined heat-treated AL Cups
- Praxis M30 BB tool required for installation – Sold separately