28x42x7/8 mm The most common use for this bearing is as a direct replacement bearing for the non-drive side beaing on Praxis M30 cranksets.

30x42x7 mm The most common use for this bearing is as a direct replacement bearing for BB30, PF30 and BB386 and most other bottom brackets with a 30mm OD spindle.

30x42x7 mm, bottom bracket bearing, 30 mm spindle, BB30, PF30,B386