Able to push through dirt, sand, clay, frozen ground, and embedded rock, Danuser's four-foot-long Dirtless Wobble Auger produces a hole with no loose dirt either in the bottom or around the top. The drill-type head has an offset so it wobbles as it turns, compacting the sidewalls and providing a smooth hole ready for the post or concrete. Available in 4-, 6-, and 9-inch diameters. For the 9" Auger Danuser recommends skid steers having an operating capacity of at least 2,250 pounds and an auger drive with at least 2,000 feet-pounds of torque. The Wobble Auger is not designed for three-point-hitch-mounted auger systems.