ITEM NAME:Spacers and Washers for Skateboards Longboards Scooter Cruiser img *{margin:0;padding:0;.Skateboard hardware set includes 10pcs speed washers, and 4pcs bearing spacers. Accessories for longboard, skateboard, cruiser, crooter, etc. Bearing Spacer is made of aluminum alloy, 10mmx10mm, used to improve skateboard stability and reduce wheel shake, keep bearings parallel, improve rotating speed and precision, reduce bearing wear and tear.