Great Tool for Gardeners: This auger is a must-have tool for every gardener. Efficiently Dig Post Holes: Auger drill bit size: 4 x 22cm, it can dig a 1.6" wide / 9" deep hole easily and quickly. Spiral design, with sharp drill head and fixed shank for easy and quick digging of different types of soil. Universal Compatibility: The universal size of the hex shank will work perfectly with any 3/8" or larger chuck. It is recommended to use an 18V drill or more powerful drill, hundreds of planting holes can be drilled in minutes. High-performance material: This auger is made of high-quality manganese steel, rust-proof and unbreakable, all the shafts of the drilled excavator inside are solid. Widely used: Great DIY tool for crocus bulbs, potted plants, trees, flowers, vegetables, but also for mixing seeds, soil, fertilizer or mortar mixes for outdoor use. Note: The data are all manually measured, please allow 1-3cm error due to manual measurement. Due to differences in light and display, there may be some color differences, please refer to the actual item received.