Quick coupling drill for drills and blind holes on solid wood and its building materials, also laminate. For use on drill chuck or adaptor. Technical features: made of high-strength special steel. Coating of fluorocarbonate PTFE in black and orange. HWM plate, centring point, 2 cutting teeth (Z2), 2 negative cuts, 4 twist drill bits, connection with mounting plate and screw for axle adjustment.