BK-54119 - 30x42 mm, for 30 mm axle. This kit should work for any bottom bracket that has 42mm OD bearings, including BB30, BB30A, PF30, PF30A, BBRight, and BB386 and any crankset with a 30mm OD BB spindle.

BB 6806/28 LLB-E-blk - 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.