Want to use an earth auger (post hole digger) with your standard electric drill? This adapter makes it possible! It's an SDS shank on one end (fits into your hammer drill or SDS drill) and has two round slots on the other end that connect to the arbor of many common earth auger heads. It's about 105mm (4.13 inches) long and 19.6mm in diameter, made from solid steel for durability. This means you don't need a dedicated power head – just attach this adapter to your drill, connect your auger bit, and you're ready to dig fence post holes, plant trees, or set up poles. A simple, tough tool that saves you money and expands what your drill can do. (Note: The adapter only is included – the drill and auger bit are not).