1. 300A-500A CUP HEAD AMERICAN TYPE ,JACKSON 2. brass and iron material , handle DMC material, 3.got CCC,ISO9001-2000 welding electrode holders American type 300A 1.External torch body is made of DMC material with comfortable handle, good insulation property,high impact strength and heat resistant strength2.Internal electric conductor is adopted the forged copper,casted copper or plated copper ...