NTN Bearing 6001ZZ Single Row Deep Groove Radial Ball Bearing, Normal Clearance, Steel Cage, 12 mm Bore ID, 28 mm OD, 8 mm Width, Double Shielded: Amazon.com: Industrial & Scientific
uxcell 606-2RS Deep Groove Ball Bearing 6mm x 17mm x 6mm Double Sealed High Carbon Steel Z1 Bearings 8pcs: Amazon.com: Industrial & Scientific
uxcell 606-2RS Deep Groove Ball Bearing 6mm x 17mm x 6mm Double Sealed High Carbon Steel Z1 Bearings 8pcs: Amazon.com: Industrial & Scientific