If you are not a drilling professional, it is not easy to make a hole in any material at a perfectly right angle. This can be especially difficult if the surface to be drilled is smooth enough so that the drill bit does not slip off in the wrong direction at the beginning of its stroke and spoil everything. This device is not an attachment to a screwdriver or a drill, but will be an indispensable assistant when working with the tool. It is necessary to simply pass the drill through the holes in the conductor and rubber bumpers will not allow it to deviate from the course. With its help, you can also drill directly on the corners of boards, walls and other things. The fixture has holes for 4, 5, 6, 8 and 10 mm.