We a variety of diameter options ranging from 5mm to 12mm to meet different apertures requirements, adapt to engineering projects, and solve various drilling problems for users in the fields of construction, decoration, and more The hexagonal handle structure ensures a more secure clamping force, improving grip stability by 30% compared to a round handle, making it for fine drilling in narrow spaces and suitable for professional construction personnel Lightweight and easy to operate, not prone to fatigue, especially suitable for long-term use, suitable for home enthusiasts and professional technicians to quickly complete various drilling tasks The drill design ensures precise drilling with error of less than ± 0.2mm, suitable for fine operations of high-densities materials such as concrete and stone, improving overall construction efficiency and meeting the requirements of the modern construction industry Crafted from steel alloy, with a hardness of up to HRA 90+, the wear resistance is doubled compared to ordinary drill bits, making it suitable for drilling hard materials such as concrete and bricks, Manufacturer: ERRORY