TIMESETL 20 Pack 608-2RS Ball Bearings, Double Rubber Sealed Miniature Deep Groove 608RS Bearings for Skateboards, Inline Skates, Scooters, Roller Blade Skates, 8 x 22 x 7mm: Amazon.com: Industrial & Scientific
R166 ZZ Bearing, ID 3/16 inch x OD 3/8 inch x 1/8 inch Miniature Ball Bearing, Metal Shielded and Pre-Lubricated with Grease, 3/16 inch Precision Roller Bearing (10 Pack): Amazon.com: Industrial & Scientific