This post hole digger requires two people to operate and can dig holes up to 36″ deep. It has available auger sizes of 6″, 8″ (for 4″x4″ posts), 10″, or 12″ diameters. You can dig an extra 12″ if you also rent a post hole auger extension. The augers for our post hole digger are carbide tipped for the tough clay soil we have in Colorado. All of our gas driven equipment comes to you full of gas and does not need to be refilled before return. The user of this item must come in to receive full use and safety instructions. This item is only available during our open hours. No overnight rentals on this item due to insurance liability.