Hardened metal construction longer life than standard steel bits, maintaining under heavy duty use, reducing replacement frequency for industrial and repair applications Engineered with a unique cutting edged design for accurate positioning, ideal for engineers and technicians requiring metal drilling tasks The metal drill bits feature wear and heat resistance, drilling through steel plates up to 26mm diameter, perfect for construction and machining professional tackling tough materials Suitable for most power tools for additional accessories, enabling deployment for time sensitive operational repairs Designed to drill through materials including aluminum, copper, and sheets, providing versatility for construction workers and enthusiasts handling varied projects, Manufacturer: YIGZYCN