Bones skateboard wheels & bearings have a devoted customer base who swear by them because they make some of the most durable, long lasting wheels out there in a variety of shapes and formulas. Bones is a division of Powell Peralta and from historical moments like Steve Cabs input leading to the popular Rat-Bones wheel being released in the 80s they have been at the forefront of advancing urethane technology. They offer a Dragon Formula, Street Tech Formula, Skate Park Formula and All-Terrain Formula.