Feature: 1. HIGH TEMPERATURE RESISTANCE: This spot welder has high frequency capacitors, low internal resistance, and can withstand high temperatures of 105℃ 2. IMPROVE EFFICIENCY: Brass electric welding machine conducts electricity and heat, improves spot welding efficiency, and can be used for a long time 3. HIGH DURABILITY: 10AWG wire, aluminum oxide copper pin solder joints ensure high current throughput and durability 4. EASY TO USE: The welding machine adopts positive and negative markings, not easy to connect wrong wires, portable, stable, reliable 5. GEAR DISPLAY: With 8 gear power adjustment, the digital tube displays the gear in real time, suitable for electronic enthusiasts Specification: Item Type: Welding Machine Circuit Board Main Color: Green Main Material: PCB. Package List: 1 x Circuit Board1 x 5m Nickel Sheet2 x Connecting Cables2 x Spot Welding Pens4 x Screw Set2 x Heat Shrink Tubing1 x Acrylic Case (Includes Mounting Accessories x 16) Note: Requires a certain amount of hands on ability