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This HSS Twist Drill Bit 1/4" is constructed from high speed steel manufactured to DIN 338.
This drill bit is ideal for use with alloyed and non-alloyed steel up to a tensile strength of 900 N/mm², cast steel, cast iron, sintered iron, malleable cast iron, non-ferrous metals and hard plastics.
HSS bits are hard and much more resistant to heat than high-carbon steel.