Premium-quality, high-density foam tires (37deg - magenta substance) set up on strong 34mm-wide XRAY Starburst tires (made purposefully softer for additional grip). The foam tire is sturdily fused toward tires and pre-trued to an optimal begin diameter. Might trued using HUDY Tire Truer with exclusive wheel adapter. Fits M18MT. Set of 2 mounted right back tires.