Features: brand new and high quality Made of pure copper / thickened DMC insulation board. Durable and solid. Anti-rust, long life. High current. With good welding stability. This welding support clamp attaches easily to any smooth metal surface, flat or curved. It holds on tightly, without budging easily. You no longer have to waste your for time finding, placing or removing a ground point for a welding job. This device serves as the ground point, which you can take with you anywhere. Simply tack this onto a convenient spot, hook up your safety wire, and you're ready to weld. This clamp is handy to have in such situations. You can stick in on a car body and not have to damage the paint. The clamp can also be attached to metal poles, struts, railings or the welding table. Specifications: Material:Brass Type:Single for Head/Double for Head Mixed Size Note: 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 x Welding Ground Clamp