Amazon.com : Z-FIRST High Speed 608RS Hybrid Black Ceramic Bearings for Longboard, Inline Skates, Skateboard, Scooters, Skateboard and More (Pack of 4, Black) : Sports & Outdoors
SKF RMS 8 Radial Bearing, Single Row, Deep Groove Design, ABEC 1 Precision, Open, Normal Clearance, Standard Cage, 1" Bore, 2-1/2" OD, 3/4" Width: Deep Groove Ball Bearings: Amazon.com: Industrial & Scientific