Matweld Cast Iron Welding Rods 2.5mm – a 6-pack solution engineered for reliable performance across workshops and home applications. These machinable rods excel at cold welding cast iron and creating strong joint welds with steel. DC welding delivers superior penetration, making repairs and joins on all cast iron types straightforward and effective. Built to withstand local conditions with lasting durability, these rods provide consistent, hassle-free results whether you're a DIY enthusiast or seasoned professional..