Our HD25 Series post hole diggers are hydraulically driven and accommodate augers ranging from 6" to 24" in diameter. They can be purchased with a bolt-on mount for mounting to the side of a bucket on a tractor front-end loader or with a boom for mounting to a category I or II 3-point hitch. The HD25 series requires a hydraulic flow system capable of producing 5 to 12 GPM. The digging performance of the bucket mounted post hole digger can be improved in heavy hardened soil conditions by applying additional down pressure with the front-end loader. An optional hydraulic down pressure kit is available to improve the performance of the 3-point mounted post hole diggers. The ability to reverse the auger on hydraulic post hole diggers greatly reduces the strain on the auger and tractor when extracting the digger from the ground. The HD25 series are designed to deliver up to 700 ft/lbs. of torque to meet the heavy duty needs of nurseries, landscapers, contractors, construction companies, farmers, ranchers, and municipalities.