a.for high conductivety of current bady b.heat resistant insulators for longer life current rate 300Amp/800Ampsuitable for electrode dia up to 5mmBase body:brass and ironOuter body:heat proot insulatorpacking detail: for seaworthy cartonsize:58*32.5*28cmN.W/G.W: 20/21KGSQty: 30pcs Electrode Holder WTE006