The economical solution for all of your snowmobile moving needs. Power WheelsTM are both drivable and steerable. Large five inch wheels. Easily drive over most surfaces including grass, asphalt, concrete or most other surfaces. They even work backing up. For non-motorized use simply place the included rear caster plate under the track and slide your sled anywhere. Fits snowmobile skis up to 7″ wide. 2 Year Warranty