Holder Cable electroder holder cable Professional manufacturer inner:iron or brass, Fully Insulated/Protected Tool Holder Cable Specification 1.Handle material:insulated fiber glass 2.Upper jaw :brass or iron3.Under jaw:Brass or iron4.Spring:Fully insulated,high strength spring for excellent gripping power heavy-duty. 5.Amperage capacity:150A,300A,400A,500A,600A,800A 6. High frequency test