1.2 Size The earth auger set contains 2 different sizes of twist drills: 8 x 30 cm (3 "x 12"), 4 x 22 cm (1.6 "x 9"). This large earth auger, suitable for digging large and deep holes this small auger, suitable for small and shallow holes. 2.High quality material Made of high quality manganese steel and steel, this makes it durable and not easily deformable. The surface has a black coating and is not easy to rust. 3.High Efficiency Spiral design for easy digging of soil. Use the earth auger in a suitable landscape at low speed (18V or more bit recommended.) A hole can be drilled in a few seconds. Note Not suitable for large or hard stones. 4.WIDE APPLICATION The Garden Auger Set is a professional choice for landscapers, it simplifies drilling tasks, great DIY tools for planting potted plants, flowers, vegetables, bare-root trees and shrubs, mixing seeds, fertilizer, soil, paint or Mortar mixes, taking soil samples, drilling plant holes or erecting fences. 5.Note: 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 2. Due to manual measurement, there may be 1-2mm error.