With its badass concave it is ideal for every skill level

Made with a water-resistant poly blend

Every insole has a 100% organic treatment that wicks away moisture and odor

sink the tail and improve stability at speed

this low-top silhouette has established itself as an icon in the skate

Spitfire F4 Classic 99D Wheels 51mm 9.0 With its badass concave itThe Spitfire Formula 4 Classics come in at a 51mm diameter and 99a durometer making it a pro wheel stable for skating street, skate parks and bowls! The Spitfire Formula 4 Classics are built to excel with its signature Formula 4 design. Formula Four Urethane was developed to combine all the desired properties of a performance wheel without sacrificing any one attribute at the expense of another! Features: Diameter: 51mm Durometer: 99a