Bosch Professional Zubehör HSS metal twist drill 4 mm A

Suitable for alloyed and unalloyed steel up to a tensile strength of 900 N/mm², cast steel, grey cast iron, sintered iron, malleable cast iron, non-ferrous metals, hard plastics. Precision-ground HSS-G steel drill enables up to 40 % faster drilling progress or up to 50 % less feed force than standard ground HSS drills with tapered shell grinding. Self-centering cross section drill point eliminates the need for pre-grooving or pre-drilling up to 10 mm Ø. The HSS-G drills are available in two qualities. The Topline drills for the highest demands and the standard drills for professional use. 2-pack. 4 x 43 x 75 mm.