High-quality material: made of high-performance steel, durable. Make the large cultivator drill with its glossy black painted surface not easy to rust. Fast Digging Easily dig through most soil types, even through clay and rocky soil. Facilitates and accelerates planting considerably. Save your back and let the plant spiral drill do the job Spiral Hole Drill Size 4.6 cm diameter x 37 cm length (1.8 inches x 14.6 inches) garden plant bulb with 0.8 cm non-slip hex drive. Easy to use: Use a drill with a size of 3/8 inches or more at low (slow) speed, drill in the ground or in the corresponding landscape directly down (37 cm) and lift it out from the hole. Drill with 18 V or more, recommended for cordless drills, a minimum of 14 V is recommended. Perfect for: Suitable for professionals and DIY projects, planting flower bulbs, bed plants, grass plugs and nursery seedlings, fertilising shrubs and trees to aerate deep water and even removing weeds and roots.