HammerHead® pneumatic pipe-ramming tools lead the industry in reliability and easy maintenance. Our tools are designed to handle the toughest ramming projects with ease and exceptional performance, with features you won’t find on competitive models. We offer 11 models ranging from 4" to 34" (102 mm to 860 mm), capable of installing casing from 4" to 180" (102 mm to 4,570 mm).Air reverse All HammerHead ramming tools larger than 7" (180 mm) feature a patented and reliable true air reverse with no internal mechanism. The reverse function is controlled above ground, simplifying tool removal from the pushing collets.