Strap in, because these ABEC 3 bearings by Girl are pre-lubricated for a smooth, fast ride. Warehouse Skateboards offers the standard size (608 with an 8mm core, 22mm outer diameter, and 7mm width) and each set of Girl Skateboards ABEC 3 Blue Skateboard Bearings contains eight (8) bearings, which is enough for four (4) wheels.