1. Always staycool, no spark, safe and reliable. 2. Conduct electricty quickly and to make the welding more efficient. 3. Big magnetic area and reducing distance between conductive rod and magnetic area to achieve better magnetic force, to hold the metal pieces tightly. 4. It is durable and easy to operate. This MagneticWelding Ground Clamp is designed to hold a ground cable to any ferromagnetic surface. Type:200A Colour:Silver Material:iron Package Contents: 1 * Welding Ground Clamp Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.