Feature: 1. The spot welding tool is hand-held, and the ergonomic design is not tiring for spot welding. 2. With trigger switch, the integrated spot welding pen can be triggered instantly, and the operation is simple and stable. 3. Support high current and high power work, load current 1500A, spot welding is more precise and efficient. 4. There are radiating holes all around, so long-term work does not generate heat without interruption. 5. The copper wire of the spot welding pen is long enough to be installed on the spot welding machine and is not restricted by space movement. Specification: Item Type: Hand Welding Pen Product Model: S-73B Material: Plastic + Copper Purpose: Install on spot welding machine Maximum Welding Thickness: Approx. 0.25mm / 0.01in Adjustable Solder Pin Spacing: Approx. 3-7mm / 0.1-0.3in Soldering Pin Size: Approx. 35 x 3mm / 1.4 x 0.1in Load Voltage: 4-6V Load Current: 1500A Handle Size: Approx. 50 x 33 x 180mm / 2 x 1.3 x 7.1in Copper Wire Length: Approx. 540mm / 21.3in (including interface length). Package List: 1 x Welding Pen (16 Square Copper Wire + U‑Shaped Plug)1 x Needle Pitch Hex Wrench1 x Copper Wire Hex Wrench 1 x Pressure Adjustment Wrench 1 x Slot Screwdriver 2 x Spot Welding Pin2 x Screw 1 x English User Manual Note: 1. After the welding is completed, since the weld metal has not completely solidified, do not rush to touch the workpiece, nor rush to clean the welding slag on the welding pen and the workpiece to avoid scalding.2. For novice users, please refer to the manual for operation.