【Strong and Durable】The auger drill bit is made of high strength solid steel, high strength, wear resistance. Solid Shaft and one-piece design, making our tool more robust. Makes hole digging easier, extremely increase your planting efficiency.package include 3x12 /1.6x9Earth Auger Drill Bits and 10 plant labels 【Easy to Use】Just fix the auger drill bit on the drill clamp of the garden auger to use, hold the electric drill with both hands for planting, and then open it to dig down. Drill a hole anywhere from an inch to several inches deep in just a couple seconds. Fit any 3/8” hex drive drill, please using drill with adjustable drill chuck to fit any sizes augers, you will never worry about if the auger fit your drill any more. 18V or larger cordless drill recommended.