Description
Metal drill made of solid, extremely heat-resistant cobalt-alloyed steel (5% cobalt) ground according to DIN 338. Surface polished. Suitable for drilling in high-alloy steel and metal with a tensile strength of 1000 N/mm such as acid and heat-resistant steels and stainless steel. QUAD EDGE drill tip: unique combination of 135 cross grinding and 4 cutting edges: 135 cross grinding for easier centering, no punching required. 4 cutting edges produce smaller chips for less heat development and longer service life. Variable spiral geometry for faster chip removal and less heat development. Reinforced drill core: The innovative core is conical and becomes stronger towards the shaft. Strengthens the drill and increases the service life of the spiral
diameter 7
working length 69
total length 109
Contents 5
