The Concealed Hinge Jig eliminates the guesswork involved in installing concealed hinges on cabinet doors. This low-cost, simple-to-use jig ensures precise hinge alignment, allowing you to install doors that match perfectly and function properly. In addition, the Concealed Hinge Jig can be used with a regular drill and the carbide-tipped bit that comes with it. Using the Concealed Hinge Jig and a drill, you can drill cup holes for concealed cabinet door hinges. The jig precisely positions and offsets an included carbide-tipped bit, and thanks to a depth stop collar, drills to the exact depth every time. The jig is easy to use, and it ensures the cabinet doors match perfectly and function properly.