Gultnis – Enduro Bearings 6201 LLB ABEC 3

5,00 
12x32x10 mm used as a hub bearing for some older quick-release hub designs but has also been used for-bike motors and and indoor trainers

Gultnis – Enduro Bearings 6901 LLB ABEC 3

10,23 
12x24x6 mm used as a hub bearing for some quick-release hub designs

Gultnis – Enduro Bearings 6904 LLB ABEC 3

8,21 
20x37x9 mm used as a front hub bearing, and can be used as a pivot bearing

Gultnis – Enduro Bearings 61802 SRS ABEC 5

11,82 
15x24x5 mm used as a hub bearing and can be used as a pivot bearing

Gultnis – Enduro Bearings 61903 SRS ABEC 5

14,18 
17x30x7 mm sed as a hub bearing and can be used as a pivot bearing

Gultnis – Enduro Bearings MR 18307 LLB ABEC 3

7,58 
18x30x7 mm this bearing replaces bearings marked 6903 in front hubs from DT Swiss, Giant and Bontrager, though the ID of this bearing is 1mm larger than standard 6903.

Gultnis – Enduro Bearings 6903 LLB ABEC 3

12,08 
17x30x7 mm used as a hub bearing, as bottom bracket bearing for some older square taper BBs