sourcing map 6700-2RS Deep Groove Ball Bearings Z2 10mm x 15mm x 4mm Double Sealed Chrome Steel Blue Cover 10pcs

Cheap but decent bearings. Tolerances for OD / ID pretty good. Little bit of play between inner and outer race, but fine for my purpose.

works fine and runs smooth, size is a little of but only by 0.2mm so isnt much great buy :D