* 58 mm x 33 mm * Durometer: 83A * Pack of four (4) * Durable material for indoor/outdoor use * Smooth ride Make your roller skates pop with these unique wheels from C7. The 58 mm diameter means you get a smooth balance between acceleration and control while the 33 mm width provides excellent maneuverability. Each set comes with four (4) wheels that are made from a durable polyurethane (83A) material that can provide you with a luxuriously smooth ride both indoors and outdoors. Bearings not included.