High Quality: The drill bit is made of ultra-hard alloy for sharper cutting, smooth chip removal, and excellent boring performance with outstanding capacity. Hinge Hole Cutter: Features a 35mm boring diameter. The removable depth stop design allows for easier drilling operation. Concealed Hinge Boring Jig: Equipped with a V-locator that aligns to a center reference line, enabling quick and accurate center point location for all brands of hinges and mounting plates. Easy to Use: This hinge drilling jig allows convenient and precise drilling of cup holes on cabinet doors or desks, ideal for home use. Even non-professionals can quickly locate center drilling points for hinges and mounting plates. Multiple Use: Compatible with drill press, pistol drill, bench drill, vertical drill, hand electric drill, stand motor drill, and magnetic drill. The drill guide is widely suitable for woodworking DIY enthusiasts and professionals. Product Features: 1. Quick Hinge Installation Jig: Helps drill accurate concealed hinge holes. Ideal for positioning and installing furniture door cabinet hinges. 2. 35mm Hinge Hole Saw Jig: Made of ABS plastic, lightweight, portable, and easy to operate. How to Use: 1. Position the hinge cup by rotating the short board upward, secure with a screw at the board edge, then drill the hinge cup hole. 2. Mark a center line on the other board, position the short board downward, align the center line with the inverted triangle marker, then drill the hinge base positioning hole. 3. Install the hinges. Specifications: Material: ABS Hole Diameter: 35mm Size: 77 x 66mm Package Included: 1 x 35mm Hinge Drilling Jig + Forstner Bit Set