High-quality material made of high-performance steel, durable. Make the large cultivator drill not easy to rust with its glossy black lacquered surface. Quick digging easily digging through most soil types, even through clay and rocky ground. 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 appropriate landscape directly down (37 cm) and lift it out from the hole. Drill with 18 V or more recommended; for cordless drill a minimum of 14 V is recommended. Perfect for professionals and DIY projects, planting flower bulbs, bed plants, gr plugs and nursery, fertilizing storms and bum to ventilate deep water and even removing weeds and roots.