The Spitfire Formula Four Conical 99DU wheels are a staple in the skateboarding world, known for their durability and performance. These wheels are designed to offer a balance of speed and control, making them suitable for various skateboarding disciplines. The "99DU" designation refers to their durometer rating, indicating a medium-hard wheel that provides a smooth ride on rougher surfaces while maintaining good grip.

• Set of four Conical 99DU wheels
• Made from 100% True Performance Urethane
• 52mm diameter
• 31.3mm width
• 99 durometer
• Conical shape for reduced weight and a wide riding surface
• Natural colorway