Strap in, because these bearings by Pig Wheels are pre-lubricated for a smooth, fast ride. We offer the standard size (608 with an 8mm core, 22mm outer diameter, and 7mm width) and each set of Pig Wheels Prime Skateboard Bearings contains eight (8) bearings, which is enough for four (4) wheels. Includes: One (1) set of eight (8) Pig Wheels Prime Skateboard Bearings from Pig Wheels.