RSI provides fully equipped Geoprobe 6620DT Direct Push/Hollow Stem Auger track mounted rigs. These versatile rigs are equipped with Geoprobe's most powerful GH60 hammers and dual-speed auger heads. The Geoprobe 6620DT measures only 5' wide by 8' long. Requiring only 13' of overhead clearance the 6620DT is a great option for tight access drilling.