Strap in, because these bearings by Shake Junt 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 Shake Junt Night Train Skateboard Bearings contains eight (8) bearings, which is enough for four (4) wheels. Includes: One (1) set of eight (8) Shake Junt Night Train Skateboard Bearings from Shake Junt.