If you are looking for a spot welder control board, then your research is over here. That's because our product can meet your need. Adopted of solid material, practical and durable for long time use, not easy to get deformed and bring you much convenience. Features - -Material:PCB, Electronics component - Size: 10.00X6.00X2.00cm/3.93X2.36X0.79in : 40A - Precise control of welding with digital display of time and adjustment. - Made of PCB and electronic components for durability. High stability with single-chip microcontroller control. - This spot welder control board is suitable for DIY spot welding machines. - Provides and reliable welding experience. Compact and lightweight design for easy portability. - Simple , but very practical in use, which brings great convenience to you. Package list: 1 x control board 1 board 1 2 x knobs 3 x gaskets 2 x nuts