OJ Double Duro Black / Gum Mini Combo 99a / 95a, 58mm Wheels Double Duros are a new approach to wheel design and manufacturing from OJ Wheels featuring a 99a outer durometer wrapped around a 95a inner durometer. Juice Specs No more bumpy roll! The built-in suspension of true, high performance 95a urethane rolls smooth on the roughest spots. OJ Wheels Double Duros feature high performance 99a and 95a formulas, precision cut into OJ’s versatile Mini Combo shape. Mini Combos feature a wide road surface for stability and consistent slide and an asymmetrical shape, cut with a round back and conical front for customizing your set up. All OJ skateboard wheels are sold as sets of 4. Features: Durometer: 99a/95a Diameter: 58mm Width: 37.95mm Riding Surface: 21.49mm