From the Manufacturer
Inexpensive, adjustable, lightweight, and compact Door/Jamb Hinge Router Template. The only template that will route a 5/8-Inch radius and a 1/4-Inch radius hinge with a 1/2-Inch bit. Routs all hinges 4-1/4-to-2-1/2-Inch with hinge to header adjustment of -5 in. to 7 in.+ and all doors 6-Feet 8-Inch to 8-Feet. For the remodeler, retrofitting doors is made easy. When retrofitting doors, it allows for perfect alignment of new hinges to existing jamb spacing, even when the existing are unevenly spaced. This template is made of high impact, reinforced ABS and aluminum extrusions.