Templaco ST-156C Strike Template 1-1/4" x 3-5/8" All Templaco Templates Are Designed To Be Used With A 1/2" Mortising Bit (Bos 85249), 5/8" Outside Diameter Router Template Guide (Por 42045) And Template Guide Nut (Por 42237) Templates Nail Into Edge Of Door Or Jamb These Templates Rout Out For The Latch Or Strike Plate On Wood Doors And Jambs