Bearing – Enduro Bearings 63803 LLB ABEC 3

11,83 
17x26x7 mm, used as a hub bearing for some hub designs, but more often is used as a pivot bearing

Bearing – Enduro Bearings 6003 LLB ABEC 3

11,28 
17x35x10 mm, used as a BB bearing for older square-taper BBs, and can also be used as a pivot bearing

Bearing – Enduro Bearings 63804 LLB ABEC 3

9,75 
20x32x10 mm, bearing for some hub designs, but more often is used as a pivot bearing

Bearing – Enduro Bearings MR 24371 LLB ABEC 3

8,66 
24x37.1x7 mm, Oversized bearing for Trek BB90 SRAM GXP and Shimano Hollowtech II bottom brackets

Bearing – Enduro Bearings 6705 2RS ABEC 3

9,89 
25x32x4 mm, bearing used by Wolf Tooth for their WolfCage offset Jockey Wheel