Extension Rods, crafted from carbon steel bars, are available in black, silver, or other colors. Measuring 3660 mm (12'FT) in length, they're crucial in drifting, tunneling, benching, and long hole drilling. Weighing 21.5 Kg, they accommodate R32xR32 diameters in sizes like 4ft, 6ft, 8ft, and 10ft, featuring a 9.2 mm flushing hole.