Spitfire Formula Four 99D Classics Skateboard Wheels - Bronze Key Chain providing a self-healing benefit because

providing a self-healing benefit because ceramic balls are so much harder than steel

The Skiff is poured in our tried-and-true Happy Thane for a balance of high speed

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long-lasting urethane perfect for rolling over any surface

Product Details: Multi-impact Design

Spitfire Formula Four 99D Classics Skateboard Wheels - Bronze Key Chain providing a self-healing benefit becauseDesigned with your favorite classic Spitfire Classic wheel designs and manufactured with the quality high performance, Formula Four urethane. Formula Four Urethane lasts longer, withstands more abuse and performs superior to all other wheels. Designed to combine all the desired properties of a performance wheel without sacrificing any one attribute at the expense of another. Manufactured using a 100% pure urethane compound, Formula Four wheels out