A Soss router guide template makes the job easier and faster and will give you a perfect installation every time. A Soss router guide template allows you to cut both the shallow and the deep mortise required for installation. There is a Soss router guide template for each size Soss hinge. Select the router guide for the Soss number hinge you have under type. The template is held on the door and jamb with nails and removable guide pins locate the deep mortise. IMPORTANT!!! You must have a Porter-Cable router guide bushing (Porter-Cable #42024) and locknut (Porter-Cable #42237) to use the Soss Router Guides. Order our SKU #900110 for the guide bushing and locknut. Router bit not included. Soss #101 hinges use a 1/4" router bit Soss #103, 203, 204, 208, & 212 hinges use a 3/8" router bit Soss #216, 218, 518, & 220 hinges use a 1/2" router bit