High quality: The drill is made of super hard alloy, which has sharper cutting, unobstructed chip evacuation, super boring ability and excellent boring performance. Hinged hole cutter: The hole diameter is 35 mm. Special removable depth stop design makes drilling easier. Hidden Hinged Drill Fixture: Features a "V" locator that runs off the center reference line and quickly locates the center point of the drill for all brands of drills. HINGES AND MOUNTING PLATE EASY TO USE: Use the hinge drilling jig to easily and conveniently dip the cup holes into the cabinet door or table by yourself, suitable for your own home operation. Even if you are not professional, you can quickly locate the drilling center point of the hinge and mounting plate. One machine for multiple purposes: suitable for drilling machines, pistol drills, bench drills, vertical drills, hand-held electric drills, vertical electric drills, movable belt magnetic drills, etc. Drill guides are widely used, suitable for woodworking DIY or professional engineers.