Eagle Tool's new dirt auger system is an economical and less labor intensive way to install cable and sprinkler systems under existing sidewalks and drives or place landscape feeding stakes. Requires only a minimal starting and ending hole on either side of the structure. Due to its flexible spring steel shank this bit can be curved and aimed in the direction needed and drills only a large enough hole to pull wire or pipe back through. No need for a costly hydraulic system or a sledge hammer, a standard power drill does all the work.