The DIY Guru Auger measures 3 in thick and 12 inches long and can dig holes up to 11 inches deep. This drill auger bit for planting is designed to leave a small amount of loose soil in the bottom of the hole to help a new plant grow. The auger bit features a hardcore 5/8-in steel shaft, rugged, 10-gauge flighting, 3/8-in non-slip hex drive, and is painted with glossy black enamel. This earth auger makes solid, thick, consistent welds, while the hex head stays secure in the drill chuck, even in compacted soil.