... Years experience of manufacture 2.various kind 3.different material Heavy duty 800A full brass electrode holder 1. with high quality ... and reasonable price,provide samples freely; MORE DETAILS:1.Handle material:insulated fiber glass or bakelite2.Upper jaw :brass ... :Fully insulated,high strength spring for excellent gripping power heavy-duty 5.Amperage capacity:,300A,400A,500A,600A,800A6.Electrode ...