Gultnis – Enduro Bearings MR 22379 LLB ABEC 3

10,23 
22x37x9 mm, the most common use for this bearing is as a replacement bearing for BMX BBs from Profile Racing.

Gultnis – Enduro Bearings MR 2437 LLB ABEC 5 Ceramic Hybrid

31,25 
24x37x7 mm The most common use for this bearing is as a direct replacement bearing for Shimano external cup BBs.

Gultnis – Enduro Bearings DRF 3041 LLB ABEC 3 Black Oxide

25,87 
30x41/44x11 mm This bearing is designed specifically for BB86/92 framesets and cranksets with 30mm BB spindles (BB386 andBB30).