ã€Material】-- Copper / Insulation Board ã€Wide Fits】-- The clamp can also be attached to metal poles, struts, railings or the welding table. ã€Convenient Work】-- Undamage the surface or cars paint,this magnetic clip is very convenient. ã€Feature】-- This magnetic clamp is easy to attach to any metal surface, flat or curved.Strong magnetic grip which can make you welding Work more easy and simple. ã€Package】-- 1Pcs Single Head Magnetic Welding Ground Clamp;1Pcs Double Head Magnetic Welding Ground Clamp; 2Pcs Copper Tail Welding Stability Clamps; 2Pcs Iron screw, Weight: 0.661386786 pounds, Manufacturer: Froiny