Check the listing for details. Powerhorse One-Person Earth Auger Powerhead Combo with 8in. Auger Bit Included,. Condition: New. Listed at 299.99 USD. This Powerhorse® Earth Auger Powerhead Combo is a high-performance, ready-to-go gas-powered auger combo that’s lightweight, easy to handle, and perfect for single-person operation. The dynamic 2-cycle, 52cc gas engine provides all the grit and power needed, then is teamed with an 8in. dia. auger bit to drill holes for fence posts, road signs, decks, tree planting and more! This unit has the gross torque to handle big jobs, but is still manageable under a single operator. Its ergonomic handlebars with anti-vibration grips keep the operator comfortable for the entire job. The powerful engine produces 55 ft./lbs. of torque and 280 RPM to efficiently dig holes in a variety of soil types. The powerhead is designed to fit a 3/4in. shaft size and the.