Amazon.com: Senston Ceramic Skateboard Bearings High Speed Double Shielded 608 RS ABEC-11 8 Pack Set for Skateboard Trucks Scooters Wheel Roller Skate : Sports & Outdoors
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