Scorpion | 52mm Conical | DHB Formula Wheel | 101a DuroConical Shape: A wheel with a wide riding surface area, used to provide increased control and slideability. The side walls cone in slightly, to a flat edge - allowing for better connection in grinds on street and transition.DHB Formula: Double Hard Bastard Formula, is built to withstand what life throws at it - tough as old boots and hard as nails. Our specially designed DHB urethane gives you a faster and slicker ride. Sabbath Scorpion Conical DHB 101A Skateboard Wheels 52mm