The Yard Butler Roto Driller Garden Auger works for you. Just attach to any cordless drill 3/8 inch or larger, it digs holes up to 7 inches deep x 1 ¼ inches wide with the ease of a power tool. The Roto Driller Garden Auger is unsurpassed for planting bulbs, bedding plants and seedlings and deep watering, aerating and fertilizing trees and shrubs. Save time and energy with the Yard Butler's garden augers. Solid steel construction for durability and reliability.