High Quality: The drill bit adopts ultra-hard alloy which makes the cutting sharper, unhindered chip removal with outstanding boring capacity and excellent boring performance. Hinge Hole Cutter: The boring diameter is 35mm. Special removable depth stop design makes drilling easier. Concealed Hinge Boring Jig: Includes a "V" locator that works off a center reference line and quickly locates drill center points for all brands of hinges and mounting plates Easy to Use: Easily and conveniently dip the cup hole on the cabinet door or desk by yourself with the hinge drilling jig, suitable for their own operation at home, even if you are not professionals, you can quickly locate the drill center points for hinges and mounting plates. Multiple Use: Suitable for drill press, pistol drill, bench drill, vertical drill, hand-held electric drill, stand motor drill and mobile ribbon type magnetism drill, etc. The drill guide is widely used, which is suitable for woodworking DIY engineers or professionals. Features: 1. Quick Hinge Installation Jig The hinge drilling guide can help you quickly drill the perfect concealed hinge hole. Suitable for positioning and installing furniture door cabinet hinges 2. 35mm Hinge Hole Saw Jig ABS plastic hinge hole jig, lightweight and portable, easy to use. How to use: 1. Determine the position of the hinge cup, the short board facing up, the screw is fixed on the edge of the board, drill the hole of the hinge cup. 2. Draw a corresponding center line on the other board, the short board is facing down, the center line is aligned with the inverted triangle, drill the positioning hole of the hinge base. 3. Install the hinges. Specifications: Material: Install the hinges. Specifications: Material: ABS Hole: 35mm Size: 77*66mm Package Included: 1x 35mm Hinge Drilling Jig + Forstner Drill Bit Set.