Natuworld 8/16/24pcs Both Side Shielded 608 Zz Abec-7 Carbon Steel Bearings for Skateboards,inline Skate, Scooter, Rollerblade 608ZZ ABEC-7 Bearings Material: Carbon Steel Size: 8x22x7 mm Both side Shielded Dimensions suitable for use in such applications as skateboards, Inline Skating, scooter and Rollerblade