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Twist drill with long shank (SDS-plus) and specially ground roof-like tip which can be regrounded easily. Quality according to DIN 7490 and the valid safety regulations
Twist drill, made of cobalt alloyd HSS-G, acc. to DIN 338, fully ground from the solid. Fitted with a special spiral for good chip removal and greasing materials. Crosswise sharpened acc. to DIN 1412C, point angle 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