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 % lower feed force than standard-ground HSS drills with tapered shell grinding. Self-centring cross-ground drill point eliminates the need for pre-coring or pre-drilling up to 10 mm Ø. The HSS-G drills are available in two qualities. The Topline drill for the highest requirements and the Standard drill for professional use. Pack of 1. 10 x 87 x 133 mm.