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300A Electrode Holder with Heat-Resistant Material Weld Holders Insulated Copper Welding Clamp for Welding Machine Tools Features: 100% brand new 300A electrode holder. Clamps are made of high quality pure copper, which is more secure and easy to replace. Thick comfortable handle, non-slip design. Ergonomically designed for welder\\\'s comfort. Handle with special insulation heat-resistant material, high temperature, non-conductive, suitable for long-term use. Applicable to: ship factory, mining and so on.