This Roto Driller does all the work. Digs holes up to 9 inches deep and 1 1/4 inches wide. It digs for you! Just insert into any 3/8-inch or larger electric or cordless drill. Plant bulbs, bedding plants and seedlings. Electrical or sprinkler installations under sidewalks are made easy, as well as insecticide applications and termite treatments. Aids in deep water aeration or fertilization of trees and shrubs. Gets the weeds, roots and all. Yard Butler guarantees all Yard Butler tools for life against any defects in manufacturing or materials.