Hardline Products TD-1 Tread Doctor Knobby Tire Cutting Tool Lightweight heated tool cuts new edges into your dull worn out knobby tires Use with any brand of motocross, trail, ATV/UTV, Enduro and flat track racing and riding tires Optimize traction of knobby tires for any terrain condition; extend the life of your tires Specially designed heated carbide cutting blade Includes cutting head and holding stand