TheBones OG Formula 100’s Wheelsare excellent wheels for the all-around skateboarder looking for an unbeatable value wheel. Manufactured with theV4 Wide shape, great for skating rails, ledges, bowls, and anything else in your pathway. Skater designed and built for faster longer grinds, more resistant to flatspots, and light weight material to keep you rolling. Features: Diameter : 53mm Width : 31mm Original Formula 100a Formula : SBA Surface : Smooth Shape : V4