Strap in, because these bearings by Cortina Bearing Co 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 Cortina Bearing Co Tristan Funkhouser Playboy Skateboard Bearings contains eight (8) bearings, which is enough for four (4) wheels. Includes: One (1) set of eight (8) Cortina Bearing Co Tristan Funkhouser Playboy Skateboard Bearings from Cortina Bearing Co.