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One-edged countersink with bored hole and countersinking angle of 90°.
600 – 1000 rpm. e.g. Ø 16 mm 800 rpm in soft wood
Seven-edged countersink with pointed angle 90°, irregular pitch, with fully ground tool head for finest results. 1000 – 2500 rpm. e.g. Ø 16 mm 1800 rpm in soft wood. Further details in the speed diagram
Brad point drill bit with extra long brad point (ground three-edged), two main cutting edges, two taper taps, four grooves on the spiral.
800 – 2500 rpm e.g. Ø 16 mm 2000 rpm in soft wood