Equipment - Kelly box 200 x 200 mm, round shank chisels densely mounted on the progressive auger part, exchangeable round shank chisel pilot bit, easily exchangeable hard metal wear plates and hardfacing as wear protection
Kelly box 200 x 200 mm, round shank chisels densely mounted on the progressive auger part, exchangeable round shank chisel pilot bit, easily exchangeable hard metal wear plates and hardfacing as wear protection