Bulb Planter, Drill Up To 8 Inches Deep, Fits 3/8-inch and 1/2-inch Drills Great for planting bulbs, plants or seedlings quickly This 2.75-inch auger drills up to 8 inches deep Fits 3/8-inch and 1/2-inch drills Not recommended for heavy clay or rocky soil All steel construction, measures 5/16-inch x 24 inches long