K2 Bolt Speed Inline Skate Wheels. The Bolt Series uses high-performing urethane in a bullet profile (speed), designed for outdoor cross-training skaters looking for a light, fast roll with good rebound qualities and a good price. 

Does not come with bearings or bearing spacers. If not transferring the spacers from your old wheels, you can grab some here (Sonic Bearing Spacers). Long-sleeved spacers are for use with 6mm axles, and floating spacers with 8mm axles take up the entire center diameter of the bearing. All wheels come in a multi-purpose storage bag.