Check it out time to give your rio rollers a fab splash of colourall of the new rio roller coaster wheels are exclusively designed to prevent the axles from protruding therefore limiting any damage to flooringthese quality pu wheels provide plenty of grip without being too soft and the new cores provide extra stability for when you build up some speed no fear of overheating around the bearings or wheel deformation which non cored wheels can suffer fromproduct specrio roller exclusive pu w