The Auger Spiral Drill Bit will save you time and energy when working in the yard. Ideal bulb planting auger for tulips, iris, bulbs, bedding plants, and seedlings. Excellent quality and value. Long-lasting and can be used for a long time. The Auger Drill Bit works with any electric or cordless drill that can accommodate a 3/8" bit. There is no better tool for digging holes in your yard. Great for digging weeds up by the roots. Instantly digs holes up to 7 inches deep and 1.75 inches wide using the power of your handheld drill.