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 6.8
working length 69
total length 109
Contents 5
