Bones SPF Ripples 54mm P5 Sidecut 81B Skateboard Wheels
Side cut walls providing a straighter edge for better control on edges, ledges and rails. Designed for less drag making longer grinds easier.
Skatepark Formula™ (SPF) is very high quality urethane specifically formulated to resist flatspotting on slick or smooth surfaces while maintaining a higher rebound for a quicker response and a faster roll.
Skatepark Formula™ has a high resistance to abrasion while not compromising hardness and slide ability. Simply put… Skatepark Formula wheels grip better on slick surfaces, are almost impossible to flatspot, and are the fastest, longest lasting wheel on the market today.
81B Durometer = 101A