This is a kind of quality welding pen, which adopts high temperature resistant plastics handle, high hardness, anti-broken and practical. Aluminum oxide copper alloy welding pin design, with lower internal resistance to bear bigger welding current. Milti-purpose, with multiple functions, prefect for welding 18650 battery. You can have a try. Features: Adopts high temperature resistant plastics handle, high hardness, anti-broken and practical. Aluminum oxide copper alloy welding pin design, with lower internal resistance to bear bigger welding current. Compacting by crimping tongs, can effectively reduce current loss, solid and wear resistant. Milti-purpose, with multiple functions, prefect for welding 18650 battery. There are two kinds of sets for you to choose, without wires and with wires, you can choose according to your demands. With wires: Multiple strands of high temperature wire(10AWG, 400mm length) with fine torsional resistance ability. Specifications: Name: Welding Pen Material: plastics+aluminum oxide copper alloy Type: with wires, without wires (optional) Cable: 10AWG, 0.4m Welding pin: 3mm body, 1.5mm needle-tip Max instantaneous current: 500A Welding thickness: le;0.3mm Pen size: 160 * 24 * 13mm / 6.30 * 0.94 * 0.51in Item weight: Without wires: 250g / 8.82ounce With wires: 300g / 10.58ounce Package size: 180 * 60 * 50mm / 7.09 * 2.36 * 1.97in Package weight: Without wires: 300g / 10.58ounce With wires: 350g / 12.35ounce Packing List(with wires): 2 * Welding Pen 2 * Wires OR Packing List(without wires): 2 * Welding Pen