[Qty.50] 608-ZZ ABEC3 Metric Miniature Ball Bearing [8mm ID x 22mm OD x 7mm W]
The QJZ brand is on the outer race, which is a nice touch and easy to spot.
[Qty.50] 608-ZZ ABEC5 Metric Miniature Ball Bearing [8mm ID x 22mm OD x 7mm W]
If you look closely, you will find that the QJZ brand is etched clearly on the bearing.