The Bones Wheels Skatepark Formula™ (SPF) is very high-quality urethane specially formulated to resist flatspotting on slick or smooth surfaces while maintaining a higher rebound for a quicker response and a faster roll. Simply put: The Skatepark Formula wheels grip better on slippery surfaces, are almost impossible to flatspot, and are the fastest, longest lasting wheel on the market today.
You might think that a wheel is just a wheel. When it comes to skateboarding, that is far from reality. Bone Wheels have made it their sole purpose to supply skaters with premium quality durable wheels. With everything being produced locally in their California factory, they are the first choice for pros and beginners alike.