Bosch HSS-G Drill BitBosch HSS G Drill Bit Suitable for alloyed and non alloyed steel up to a tensile strength of 900 N mm, cast steel, cast iron, sintered iron, malleable cast iron, non ferrous metals, hard plastics Precision ground HSS G drill bit enables up to 40% faster drilling rate and up to 50% lower feed pressure than standard ground HSS drill bits with a chisel edge Self centring split point drill tip means there is no need to pre punch or pilot drill up to 10 mm