Our Nineballs have been a long-time favorite of skaters from all walks of life. From cruising kids to freeriding chargers, we've got something for everyone in this collection. All these wheels provide good roll speed and come with either a natural finish for speed and grip, or a stone-ground finish for immediate slides. *All wheels are sold as a set of 4 SPECS 70mm Diameter 78A Durometer 38mm Contact Patch FEATURES Nineball Urethane Better Roll Speed Round Lips for Smooth Slides Over Cracks and Road Imperfections Cosmic Core for Improved Roll Speed and Wear Natural Finish for Added Grip Great Slides and Thane After Breaking In