Profile: Geoprobe Systems specializes in direct push technology. We are associated with machines, tools and consumables. We manufacture hydraulically-powered direct push machines. Our 8140DT sonic machine features the GV4 rotary sonic head. It has adjustable operator control panel with integrated electronic diagnostic system. Our model 8040DT direct push machine has hollow stem auger capabilities, and a wide-base platform. It has GH80 hammer, and is capable of driving 2.25 inches, 3.25 inches, and 4.5 inches tooling.