Auger comes in sizes ranging from 2-9 inches in diameter. Augers with 2 and 3-inch diameter powered by an ordinary electric drill. They come in lengths ranging between 7 inches and 48 inches. Large augers (4-, 5-, 7-, 8- and 9-inch diameter) all need to use gas powerhead. This auger is 28 inches long, except for 7-inch diameter models, which come in both 16- and 28-inch long. You can also get to know more about groundhog auger via groundhogparts.

Things you can do with the earth auger varies depending on the size of this auger. Here's a quick guide to help you choose the best tool according to your needs:

Two-inch augers ideal for gardeners, allowing you to quickly and easily plant bulbs, plugs and plant beds. It is also a good size for root aeration, and to install a small plant stake or pole. 3-inch augers can do the same job as augers of 2-inch, but also great for drilling horizontally if you need to run a plumbing or electrical wiring under the pavement. It is also a good size for mixing paint, cement or soil.

On 4 and 5-inch size, this augers drill a larger hole, ideal for setting a small fence post or planting annuals and perennials that come in a pint-sized pot.

7-inch diameter auger is enough to plant annuals, perennials, trees or large shrubs in a gallon-sized pot.

Eight and nine-inch diameter augers are perfect for planting pot plants in two-gallon containers. This size is large enough for bigger fence posts or 6 × 6 posts.