Install doorknobs with this Strike and Latch Template. Its a professional quality kit that makes it easy to mortise latch and strike plate openings with any 1/4-inch collet router. Various settings for strike and latch plate sizes ensure precise results. Strike plate sizes include 1 1/8-inch x 2 3/4 -inch, 1 1/2-inch x 2 1/4 -inch, and 1 1/2-inch x 2 3/4 -inch Latch plate sizes included are 1-inch x 21/4-inch, 1 1/8-inch x 2 1/4-inch, and 1 1/8-inch x 2 3/4-inch This template is compatible with door thicknesses of 1 3/8-inch and 1 3/4-inch It comes with a high speed steel router bit, bearings, brads, and instruction manual.FeaturesUsed to rout both the strike and latch plate on doors and frames Accommodates both 2 1/4-inch and 2 3/4-inch strike plate sizes Extended template platform provides excellent router stability Positive placement lock in pins enable quick and secure placement of the template to the door and jamb Accommodates doors of various thickness: 1 3/8-inch, 1 3/4-inch, 2-inch, 2 1/4-inch, and 2 1/2-inch Template center marks enable quick and easy alignment