More Stronger-The auger drill bit for planting is made of high quality heavy-duty steel with solid shaft, integrated bit and hexagonal head connection design, which makes it stronger, non-slip and durable for you to use.In addition,the entire frame of our bulb auger for drill is sprayed with environmentally friendly technology to prevent rusting. Efficient Work-The upgraded version of the auger drill bit set has the ability to penetrate the soil even if there are small rocks in the soil when planting.This garden auger spiral drill bit is suitable for fast digging in sandy/wet/dry soils.Using the power of a handheld garden auger, hundreds of holes up to 8, 11 or 14 inches deep and 1.6, 2 or 2.8 inches in diameter can be made in minutes. Dramatically increase digging efficiency without blisters and sore hands. Multiple Sizes-Our augers for planting are available in three sizes, 1.6 "x9", 2 "x15" and 2.8 "x12". Each size is suitable for different scenarios requiring. 1.6 "x9" garden auger is suitable for planting bulbs, flowers or vegetable seedlings.2 "x15" for beach umbrella post holes and fence holes. 2.8 "x12" for growing plants with alittle bit large roots, such as potatoes and cabbages. Widly Use-This auger for planting is the perfect choice for gardeners. Plant bulbs, vegetables, flowers, bare root trees and shrubs, tilling soil or planters, mixing seeds, soil, fertilizer, paint, or batches of mortar mix. You can effortlessly dig post holes or even take it with you when you go to the beach and drill a hole in the sand to secure your beach umbrella. Quality Service-The shank of garden auger spiral drill bit for planting is 3/8",works with any drill,18V or higher hand drill is recommended. Heavy duty and long lasting even under the toughest conditions. Our unique 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.