This is a kind of handheld spot welding pen, the outshell of handle is made from nylon material, with high hardness, fine wear resistance, anti-broken and practical. Built-in automatic trigger switch, one-handed operation. Detachable design, also can be used as split-type spot welding machine. There are two types for you to choose, butt welding function, spot welding function, you can choose according to your demands.