• 77-in. probe cylinder
• Allows use of 60 in. probe rods and samplers
• Over 20-ton pulling capacity
• Equipped with powerful GH62 Hammer
• Heavy-duty undercarriage
• Wireless remote control
• Built-in rotary spindle
• Hydraulic winch
• Two-speed probe cylinder
• Hydraulic movement in all three axes
• Auxiliary hydraulic power ports
• Compatible with Geoprobe® tooling & logging equipment

The Geoprobe® Model 7720DT is a high-capacity direct push machine with a narrow platform for limited access areas and a longer stroke for added work space under the hammer. This machine is equipped with many of the features Geoprobe® customers are accustomed to, and with many new advantages to offer customers flexibility in all types of field conditions.

The Geoprobe® Model 7720DT combines a 77-in. stroke from a 7730DT machine with a 6620DT's undercarriage design. The result: additional working space under the hammer for dual tube and augering work with a more compact and lighter weight package than the 7730DT.