The Bahco 4513-18.50-1P is an industrial-grade metal drill bit with a diameter of 18.50 mm, a length of 198 mm, and made from high-speed steel with a gunmetal finish. This bit is ideal for drilling into harder materials such as steel, stainless steel, cast iron, copper, brass, bronze, and aluminium. This drill bit is designed for use with impact tools and provides excellent efficiency and performance.