Peer Bearing 6001-ZZD 6000 Series Radial Bearing, 12 mm ID, 28 mm OD, 8 mm Width, Double Shield: Amazon.com: Industrial & Scientific
NTN Bearing 6001 Single Row Deep Groove Radial Ball Bearing, Normal Clearance, Steel Cage, 12 mm Bore ID, 28 mm OD, 8 mm Width, Open: Amazon.com: Industrial & Scientific
6001 LU Sealed Ball Bearing 12x28x8mm: Amazon.com: Industrial & Scientific
6001 Bearing 12x28x8 Open Ball Bearings: Amazon.com: Industrial & Scientific