110V Spot Welder Dent Puller, 3000W Stud Welder Dent Repair Kit, 7 Models Spot Welding Machine for Car Body Dent Repair. Efficient Cooling System: The holes on the side can quickly perform heat dissipation without a fan, making the spotter dent puller not so easy to burn, providing high efficiency and ensuring rapid heat dissipation in your work.