Slime Balls Vomit Mini 97a 53mm Wheels Slimeballs Vomit Mini wheels on wide asymmetrical shape with a rounded edge on one side and a conical edge on the other giving you a choice of lock in feel, with a wide riding surface for control on all terrain. All Slime Balls skateboard wheels are sold as sets of 4. Road Surface (Millimeters) 20 Wheel Width (Millimeters) 35