... Years experience of manufacture 2.various kind 3.different material Heavy duty 800A full brass electrode holder 1. with high quality and ... :Brass or iron or red copper4.Spring:Fully insulated,high strength spring for excellent gripping power heavy-duty 5.Amperage capacity:,300A,400A,500A ... ,French type,Korean type,German type,Italian type9.Welcome OEM Heavy duty 800A full brass electrode holder