Power Planter 428H Large Bulb Auger 4" x 28"Powerful and professional, the Large Bulb Auger is the best tool for planting bulbs and digging post holes quickly and efficiently. This auger measures 4 inches in diameter by 28 inches long, and it includes a heavy duty, 1 inch shaft made of 100% steel. Choose between an auger for Light Medium Duty work for home use or Heavy Duty work for professional use. For the 4 inch auger, we recommend using a large cordless drill with a 1 2 inch hex drive with