DUEBEL Door Lock Hole Opener Kit for Installing Doors Lock Mortiser Kit for W...

This tool cut my doors perfectly.Sure it needs a little skill and a fast drill so take care on the first mortise.further mortise holes will be quicker and better.Very pleased with this.

This is terrible product and dangerous, buy a Souber mortise jig instead. The instructions cover the very basics in poorly written english. The youtube product videos are not accessed from the manufacturers website, they are available on youtube and via Amazon, without commentary. Maybe the manufacturer should provide fully annotated instructions and a voiceover to the video. Also, the carry case includes a smaller second jig whose purpose is not explained and there are no youtube/videos to explain what it's for. The drill shaft maximum drill depth is set using a ring that is locked by a butterfly screw, make sure you keep your hands away from that when the drill is spinning!.