The Bones Wheels X99 Formula Timeless Machine V5 Sidecut 99a skateboard wheels are designed for a smooth and responsive ride. The X99 Formula provides high rebound and durability, while the Machine V5 Sidecut offers smooth slides and control. These wheels are perfect for a variety of skateboarding styles, including street, park, and cruising. With a 99a durometer and 58mm size, they provide a perfect balance of speed and grip. Enhance your skateboarding experience with the Bones Wheels X99 Formula Timeless Machine V5 Sidecut, a top choice for serious skateboarders.