Industrial Electrode Holder The Industrial 300 Amp Electrode Holder is designed to safely secure the electrode to allow welding from a variety of positions. Usability and Comfort - Lightweight, ergonomic design to fit properly in a welders hand even in the most confined spaces. Insulated handle that is easy and effective to operate in a variety of environments. . Maximum Conductivity - Copper alloy jaw to optimize conductivity and strength to improve overall welding . Amperage Rating Range - Ranging from 200 to 350 Amps to cover a variety of applications.