1. The planting auger for drill is designed with a model upgraded bit and more spirals on the solid shaft, ensuring 10 times the digging hole working efficiency, extremely increasing your planting efficiency and allowing you more time to enjoy the planting season. 2. The planting auger for drill is made of heavy duty steel with a black paint coating for a long time. The extended length of 16.5 inches enables you to stand up and dig holes for planting instead of bending over, making it a really necessary tool during your planting season. The heavy duty solid shaft can work on any kinds of soils. 3. The auger bits are 1.6 inches in diameter and 16.5 inches in length, suitable for planting all kinds of bulbs and flowers of different sizes. The 16.5 inch length also prevents back strain as you don't need to bend over as much as in the traditional way of using a shovel to dig holes. 4. The pointed triangle bit of the auger drill bit has a small hole on it for easy hanging storage when not in use. It fits any 3/8' hex drive drill. Using a drill with an adjustable drill chuck can fit any sizes of augers. A 18V or larger cordless drill is recommended.