Spitfire F4 99 Duros Skateboard Wheels Size:55mm Heel: Reinforced Heel Construction for

Heel: Reinforced Heel Construction for durability in the heel cup area

280GSM heavy cotton jersey gives it real weight and structure

No compromises

Opera Skateboards pushes the boundaries of deck technology

Available in Beige/Black and Black/Black

Spitfire F4 99 Duros Skateboard Wheels Size:55mm Heel: Reinforced Heel Construction forSpitfire F4 99 Duros. The Wheel That Doesn't Need an Introduction. If you've been skating street for any length of time, you already know what the Spitfire F4 99 Duro is. It's the wheel that the best street skaters in the world ride because it works not because of a deal, not because of a graphic, but because the urethane formula is genuinely the best in the business. Fast, consistent, and built to handle the kind of skating that actually happens on