Durable and Strong: The auger bits are made of premium steel with glossy black painted finish, and are extremely strong and durable for long term use, can be professional auger bits. Easy to use: works. with any 3/8 or larger chuck drill, 18V or larger drill recommended. Plant hundreds or a few bulbs in minutes. the seed drill will even drill through loose, rocky material so you can plant bulbs and bedding plants wherever you want. Great gardening tool: This twist drill bit attaches to a standard electric or cordless drill. solid garden soil, saving you time and effort. Applications: Potted plants, vegetables, flowers, bare root trees and shrubs, cultivated soil or planting containers, mixed seeds, soil, fertilizer, paint or mortar mix for difficult landscapes Dig holes or ice holes.