Increase security and privacy in your home by replacing interior and exterior doors without damaging the jamb or door frame with the Strike Plate Mortise Kit from Milescraft. By routing matching mortises for strike and latch plates into the door and jamb, you won't have to tear a hole in the wall just to hang a better wooden door. Featuring an easy to use drop-in template design with a sturdy steel frame, this kit comes with everything you need for most strike and latch plates on 1-3/4-Inch and 1-3/8-Inch doors and jambs. Gone are the days of chiseling or setting stops and pegs to rout a mortise. Simply set the door thickness selector knob, attach to the door or jamb, drop in the plainly marked template for your door hardware, and rout! Includes a durable tungsten carbide tipped 1/2-Inch router bit with ball bearing, eliminating the need for guide bushings. Also includes an Easy Measure Guide where we have done the math and made it simple for you to get standard industry placement of your door hardware. Centered tabs on each template ensure complete accuracy. This product is packaged in a clamshell that snaps shut to act as a hanging storage container for your templates when not in use. Simply cut off the package seal edge when opening for reuse. Includes the following templates: STRIKE PLATE MORTISES: 1-1/8 by 2-3/4, 1-1/2 by 2-1/4, and 1-1/2 by 2-3/4-Inch strike plates LATCH PLATE MORTISES: 1 by 2-1/4, 1-1/8 by 2-1/4, and 1-1/8 by 2-3/4-Inch latch plates. Some chiseling required on templates with square corners.