Cast iron, sintered iron, malleable iron up to a tensile strength of 1000 N/mm² The HSS-G drills bits are additionally ground at the tip and along with their flutes. HSS-G drill bits are ideal for high-performance, professional application and are ideal for drillg to an alloy and non-alloy steel, non-ferrous metals, grey cast iron and malleable iron, stered iron Spiral drill bits made of high-performance high-speed steel according to DIN 338; DIN338 Jobber Length Entirely Hex Shank HSS Twist Drill Bit from China Din 338 Twist Drill Bits HSS-G Drill Bit Set - Metal And Wood Drill Bits - Oman Hss G Drill Bits For alloyed and unalloyed steel, cast steel, Buy Twist drill bit HSS DIN 338 RN 118° 170 pcs Sysko online Diameter tolerance h 8; solid ground, cobalt alloy; Right-hand spiral drill bit type N, drill bit 118°, cross cut according to DIN 1412C