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Special twist drill made of cobalt alloyed HSS, acc. to DIN 1869, fully ground of the solid, extra long version, right hand cutting. Profile crosswise sharpened 135°
Premium version, fully ground quality with two main cutting edges and two taper taps. Specially ground spiral for a very good chip removal. 2400 – 8000 rpm e.g. Ø 4 mm 5000 rpm in European hard wood. Further details in the speed diagram
600 – 6000 rpm. e.g. Ø 68 mm 1300 rpm in European hard wood. Further details in the speed diagram