Matweld Aluminium Arc Welding Rods 2.5mm – 4 Pack Professional-grade aluminium arc welding rods designed for reliable repairs on aluminium castings and alloys. This versatile 2.5mm electrode delivers consistent, high-quality welds in workshops and on-site applications. Compatible with DC welding machines using reverse polarity. Pre-heating before welding is recommended for optimal results. Engineered for durability and performance, these rods are ideal for both DIY enthusiasts and experienced welders seeking dependable equipment that performs in demanding local conditions.