Bearing – Enduro Bearings 6901 LLB ABEC 3

10,63 

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

Bearing – Enduro Bearings 6903 LLB ABEC 3

12,56 

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