General description AlwaysH 20pcs 608zz Ball Bearings are designed for various applications including skateboards, scooters, and inline skates. These high-quality bearings ensure smooth and efficient operation, making them ideal for high-speed use. Technical specifications Size: 608ZZ Inner Diameter: 8mm Outer Diameter: 22mm Thickness: 7mm Material: High-quality chrome steel Features: Double cover seal to prevent dust ingress Usage Suitable for roller bearings, pedals, skates, and skateboard bearings Can be used in toy models, office equipment, micromotors, instruments, and laser engraving Applicable in small clocks, floppy disks, rotors, dental drills, hard disk motors, and stepper motors