Extremely versatile, the attachment fits any 3/8” and ½” electric or cordless drills. Designed with performance in mind, it drills holes 2- ¾ in diameter and up to 8” deep, making it perfect for just about any planting task. Works well for planting bedding plants, grass plugs, nursery stock seedlings. Guaranteed one of the most resourceful tools for anyone who loves to garden.