10pcs Deep Groove Ball Bearing 686Z Double Shield, 10 x 6 x 13mm Chrome Steel

Size: 686ZZ (Inner Dia.=6mm, Outer Dia.=13mm, Thickness=5mm) Shields on BOTH SIDES of the bearing to keep dust out. Suitable for high speed operation Chromium Steel long-life bearings, smooth and low noise ABEC Tolerance 1 (P0) for most general use Pre-Lubricated, Easy to maintain