Different from other traditional stud welding machines, ours supports 3KW welding power and built-in super capacitor. Single-side welding thickness 0.024～0.047"/0.6～1.2mm. Input Power: 3KW. [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.