Description: Thick copper bar design helps improve working efficiency and ensures long service time. Dual springs in the handle design allows each soldering pen can expand and retract independently. It is constructed of abs material. The length of the product is 12.57cm, the width is 4.15cm. It is suitable for workshop. Integrated design, beautiful and clean, with fine heat dissipation effect. Item Name: Spot-welding Pen Material: ABS Input Voltage: 4-12V Current: Above 800A Features: High Strength, Good Toughness, Wear Resistant Size Details: LxW: 12.57cm x 4.15cm/4.95" x 1.64" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 Set of Spot-welding Pen