HammerHead’s ROUGHNECK R400 

Pneumatic Rock Hammer system includes the R400 air hammer, 5.25-inch straight and offset bits, patent-pending pullback kit, control station/oiler, drill conversion kit and universal HD high-flow rock drill housing. Designed to drill at rates up to 150 feet-per-hour while providing enhanced steering performance, the R400 allows a directional drill to work in multiple rock conditions without changing out the housing.