The dewalt 29 piece hss-r drill bit set is a comprehensive metal drilling solution designed for professional tradespeople working across a wide range of ferrous and non-ferrous materials. Built to a high standard, each bit features an innovative tapered web construction that significantly reduces the risk of breakage during use. The black oxide finish provides extended corrosion resistance, helping to prolong bit life even in demanding job site conditions. This set is suitable for use in both portable and stationary drilling applications, covering materials including steel, cast steel, alloyed and non-alloyed steels, grey cast iron, spherical-graphite cast iron, sintered iron, nickel, and brass up to 900n mm . The precision ground twist design ensures rapid material removal, long service life, and excellent concentricity throughout the range. With 29 bits spanning 1mm to 13mm, this set gives contractors and engineers the coverage needed to tackle a broad variety of drilling tasks without switching between sets. Features and benefits: tapered web construction reduces breakage for longer bit life black oxide finish provides extended corrosion resistance precision ground for rapid drilling and excellent concentricity suitable for portable and stationary drilling applications compatible with steel, cast iron, brass, nickel, and other metals up to 900n mm 29-piece set covering 1mm to 13mm for versatile on-site coverage contents: 1mm hss-r black oxide metal drill bit 1.5Mm hss-...