I bought this at tractor supply It was a few hundred bucks. I went to a local welder and had him take square tubing that would fit over the anchor head and welded a shaft that would fit the auger. I have set over 500 anchors with it and I also still use the auger to start pilot holes when we are hand setting poles. in all it was under $500 and works excellent. http://www.tractorsupply.com/outdoor-power-equipment/post-installation-equipment-supplies/post-hole-diggers-accessories/earthquake-reg-2-man-earth-auger-powerhead-with-190-cc-briggs-stratton-4-cycle-engine-2118964
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