Bore Size:8 mm Outside Diameter:22 mm Precision Rating:P0, P6, P5 ,P4 ,P2 Seals Type:open Number of Row:Single Row Payment Terms:T/T Certification:ISO9001 608 ceramic bearing:8 x 22 x 7 mm ceramic Ball Bearings Seals Type:open Structure:Deep Groove Packaging:White plastic tube,paper box and pallet Type:Ball Application:Skateboard Material:Full ceramic Show More