This ground drill extension can extend drills to the length that matches your specific purpose. Mounted on augers, it provides rapid and efficient drilling of holes for setting fence posts, poles, trees and shrubs into the ground. Made of heavy duty steel, the drill bit extension is built to last and strong enough for meeting various drilling needs. This drill bit extension is equipped with a 20 mm connection shank and is therefore compatible with all regular augers. The extension can be combined with our drills. You can check our shop for the compatible drills (sku 140340).