Premium-quality, high-density foam tires (42deg - purple ingredient) mounted on strong, rigid 28mm-wide white dish rims. The foam tire is solidly fused towards tires and pre-trued to an optimal beginning diameter. May be trued making use of HUDY Tire Truer with unique wheel adapter. Fits M18T or NT18T. Group of 2 mounted tires can be used at front or rear.