Size: 3.1-inch (8cm) diameter x 11.8-inch (30cm) length.Quickly digs holes up to 11.8 inches deep and 3.1 inches wide using the power of your hand held drill. Build to last: Made of heavy duty steel, with glossy black painted finish. The auger drill bit point on it hits the ground first and keeps it steady when you are digging hard grounds. Our patented design also makes the distance between the digging blade start and the point is the minimal, so auger drill bit will start working on hard ground without having to push down. Save your time & Easy to use: our earth drill bit will work with any 3/8" or larger chucked drill, 18V or greater drill recommended. Plant hundreds or just a few bulbs in minutes.For cordless drills a minimum 14V drill is recommended; Keep auger clean from soil and debris when not in use. Multi-Purposes: our spiral hole drill is the best landscapers choice for increasing efficiency when planting bulbs, potted plants, vegetables, flowers, bare root trees and shrubs, tilling soil or planter boxes, mixing seed, soil, fertilizer, paint, or batches of mortar mix for hardscapes; Our earth drill bit is also effortlessly dig post holes or even bring it on vacation to drill a hole in sand to anchor your beach umbrella.It will be a good helper for you. Improve your work efficiency: Our bedding plants drill bit will make hundreds of holes in few minutes, it will save your time & save yor back. A Life Saver for you