a.for high conductivety of current bady b.heat resistant insulators for longer life current rate 500Amp/700Ampsuitable for electrode dia up to 5mmBase body:brass and ironOuter body:heat proot insulatorpacking detail: for seaworthy cartonsize:61*31.5*44cmN.W/G.W: 19/20kgsQty: 30pcs/ctn Electrode Holder WTE004