[Spiral Design for Easy Digging of Soil] Use a low-speed (slow) drill bit to drill into the soil or suitable landscaping. The auger starts working on hard ground, easily digs a hole in seconds, and works well even on packed soil. Note: Not suitable for large rocks or solid rocks. [High-quality Material] Made of sturdy steel, durable to use. With a glossy black painted surface, the cultivator bit is not easy to rust. [Wide Application] The choice of a professional landscaper, this auger bit simplifies drilling tasks. Excellent DIY tools for planting bulbs, potted plants, vegetables, flowers, bare-root trees and shrubs, cultivating soil or planters, mixing seeds, soil, fertilizer mixes, paint, or mortar for difficult landscapes. Posts, termite bait stations, soil sampling, hole drilling. Size: 8*30 cm