High Quality: The drill bit adopts ultra-hard alloy which makes cutting sharper, unhindered chip removal with super reaming ability and excellent reaming performance. Hinge Hole Cutter: The bore diameter is 35mm. The special design of the removable depth stop makes drilling easier. Concealed Hinge Boring Jig: Includes an inchVinch locator that works from a center reference line and quickly locates center drill points for all brands of hinges and mounting plates. with the hinge drilling jig, suitable for their own home operation, even if you are not professionals, you can quickly locate the center points of hinges and mounting plates. Multiple use: suitable for drill press, pistol drill, bench drill, vertical drill, hand-held electric drill, stand motor drill and tape magnet drill mobile etc. The drill guide is widely used, which is suitable for DIY carpentry or professional engineers. Features : 1. Quick Hinge Installation Jig Hinge Drill Guide can help you quickly drill the perfect