Get yourself more traction with this Allstar 110V Heated Tire Groover. Groove race, truck and other tires easily with the specially designed and now reinforced cutting head. Tapered, razor sharp blades groove fast and easy. To operate, insert a blade into the groover, set blade height with a tire depth gauge, and set the power level. We suggest using the lowest power setting to avoid smoke. Place the cutting edge against the tire surface and apply pressure to activate rocker switch for instant heat. Then push the groover across the tire for your desired traction design. Includes 4/32″, 6/32″, 8/32″, and 10/32″ flat blades and replacement blades are sold separately. Keeping blades sharp will allow for lower temperatures and faster grooving where used dull blades require more effort and higher temperatures.