20pcs 608ZZ Carbon Steel Ball Bearings One Row 8x22x7mm ABEC-7 Mini Bearings For Scooter SkateboardFeature:-8x22x7mm 608ZZ Miniature Ball Bearing is a single row bearing used to support radial load.-The bearings are made of carbon steel, with durability and resistance to large load deformation, and are shielded to prevent grease and debris from entering.-The size of the stock makes it suitable for skateboards, rollers and scooters etc. these bearings are supplied in sets of 20.-Rolling bearings use rolling elements to maintain clearance between moving parts to reduce rotational friction and support radial and axial loads.-Rolling bearings have a wide range of applications, from agricultural machinery to transportation equipment, robots, dental equipment, elevators, rolling mills, sailing waves, and aggregate crushers. Specification: Material: Carbon Steel Size: 8x22x 7mm/0.31x0.87x0.28in Quantity: 20pcsNote:Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Please allow 1-3mm measuring deviation due to manual measurement.20 X Bearings