1. Carbon Steel Material 2. Bearing with Shields on both sides to keep lubricant in and contaminants out. 3. 8mm x 22mm x 7mm 4. Wide Application such as skateboards, industrial usage, inline skates, scooters, Longboards, Roller Skates or other skating applications moderate Load Use. ABEC-7 Package Included: 4 pcs 608ZZ bearings
