Screw Auger, Lewis Pattern. Depending on one’s skill and strength

TCT brad point drill bit, cylindrical, two main cutting edges, two taper taps. Spiral form N.
4.000 – 10.000 rpm e.g. Ø 5 mm 8.000 rpm in European hard wood. Further details in the speed diagram.

Specially formed channel for removing chips, teflon-coated, changeable crest of thread HSS, two carbide tipped main cutting edges, protruding cutting edges and cylindrical shank with three clamping surfaces. Ground by diamond wheels on CNC-machines

With brad point, two main cutting edges and protruding cutting edges.
1000 – 5000 rpm e.g. Ø 5 mm 5000 rpm in softwood. Further details in the speed diagram

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

Traditional Forstner bit with centre point, two main cutting edges and two circumferential cutters. Low friction due to the reduced peripheral cutting edge

Rapid drilling in soft wood, European hard wood, chipboard, MDF etc. Rapid chipping of solid wood and chipboards. Clearly less effort is needed and boring is more rapid than with the usual Forstner bit