... ) Superb insulation 5) Nickel plated housing prevents oxidation and corrosion 6) Copper core electrode prevents oxidation and corrosion Available with below ... , UR45VX, UR4IX, UR4VX, BP6FS, T20PR-U BPR6FS, R5673-6, R5674-6, T20PR-U UR5, T20PR-U11 UR5, T20PR-U15 UR55, ITF20, UR55IX, UR55VX, UR5IX ...