Bearing – Enduro Bearings MR 18287 LLB A3 ABEC 3 Radial

8,66 

18x28x7 mm used as a hub bearing, and can be used as a pivot bearing

Bearing – Enduro Bearings MR 20307 LLB ABEC 3

8,82 

20x30x7 mm used as a front hub bearing, specifically for Mavic and Profile Racing. It is also used by Trek as a pivot bearing