The Cobalt HSS-E metal drill bits are precision tools according to DIN 338 for excellent dimensional accuracy of the bore. The right-hand cutting, brozen steel drills are precision ground and correspond to the drill type N with a normal spiral for medium length chipping material. Thanks to the special steel composition of HSS and 5% cobalt, the twist drill is extremely durable due to its heat resistance and low wear. Due to the industrial quality, the cylindrical HSS drill bits for steel are standardised and precisely processed. The metal drill bits are ideal for hard to machine materials, such as alloyed and unalloyed steel, stainless steel, grey cast iron, cast steel, bronze and plastics.
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