OJ Wheels new 57mm Elite Nomads 95a. OJ's 95a high performance urethane offers a more forgiving durometer for rough terrain with easy, consistent power slides and bark you normally get with a harder urethane. Nomads feature a straight cut, mid-width shape with sharp edge for easy lock-in and wide riding surface for consistent slide. All OJ skateboard wheels are sold as sets of 4. Wheel Diameter (Millimeters) 55 Wheel Durometer/Hardness 95a Road Surface (Millimeters) 19 Wheel Shape Nomads Wheel Width (Millimeters) 30