Installation-1. Install a 35 mm drill bit, adjust the drilling depth to 12-13 mm, and lock the boundary ring. Adjust the fixed size of the black press with a quick clip (note: the size of the die fixing plate is 15-25mm). Move the hole puncher to the marked and drilled position of the board and lock the quick terminal. Tighten the bit handle and press the hole to a depth of 12-13 mm at a constant speed, then drill 2mm screw holes on the left and right sides. Aluminum alloy material durable, precision - 35 mm hinge drill is made of aluminum alloy material, precision manufacturing, accurate positioning, easy to operate, long service life. Easy to install Hidden Hinges - The Hinge drill is a DIY woodworking tool that is easy to use and suitable for working on your own from home without the need for a professional. The adjustable dial design is limited to 3, 4, 5 and 6 mm, which is very precise, making measurement a child's game. Widely used in woodworking Doug bit Guide Positioner - 35mm bit mounting, door bit positioning, woodworking hole AIDS, 35mm bit to edge distance of 5mm, suitable for the most common hinges. Packing List 35mm cabinet hinge Jig punch - 1 * hinge hole positioner body, 1 * 35mm hole opener (with boundary ring), 2 * screw key, 1 * 2mm drill bit, 1 * feed key.