HDD UNIHammer in Action

Why drill with air? Little to no water needed. No refilling water when drilling tough ground (300 gallons will typically last all day, even in rock, on large drills). No moving the bore around because of ground conditions. Soft clay to solid rock can be handled with one head. Less mess that mud system. If the ground or rock is tough, simply go bigger air. UNIHAMMER can handle up to 500 psi for the extreme jobs