2 sets of gardening heads (8x30cm 4x22cm) Earth Drill Bit, Tree Planting Drill Bit, Includes 10 Yellow Plastic Sign Boards 【High Quality Material】 Made of high quality manganese steel and A3 steel, which makes it durable and not easily deformed. The surface has a black coating and is not easy to rust. 【High Efficiency】 Spiral design for digging the soil easily, use the earth auger in suitable terrain at low speed (18V or more drill bit recommended). The hole can be drilled in seconds. Attention ! ！ ！ Not suitable for large or hard stones. 【Universal Compatibility】 Fits any drill bit with a 10mm (3/8 inch) or larger shank. 【Wide Application】 The garden drill bit set is the professional choice for landscapers, simplifies drilling work, great DIY tools for planting potted plants, flowers, vegetables, bare root trees and shrubs, mixing seeds, fertilizers, soil, paint or mortar mixes, taking soil samples, drilling holes for plants or erecting fences. Product information: Product dimensions: 8x30cm4x22cm Material ：manganese steel and A3 steel Item weight ：800g 2 x garden drills（4x22cm 8x30cm） 10 * small plastic signs The auger bit works with most tension drill bits 10mm or larger, recommended 18V or greater. We recommend using a cordless drill with an adjustable drill chuck so you don't have to worry about the drill bit no longer fitting into your drill. Keep the auger clean of dirt and debris if you are not going to use it for a long time.