Lets you accurately set hinges in minutes. Use it for doors, strike plates, boxes, or other edge routing projects. For hinges 1" - 5" long on stock up to 1-3/4" thick. Precision made of extruded aluminum with built-in clamps, hinge setting gauge, plus scales and guide pins for door and jamb mortising. Includes special 1/2" dia. carbide bit with top bearing, & storage case.