Routing template used to mortise HES ConcealedHinges into standard and custom size doors. Reusable, constructed with durable wood and metalcomponents. Allows for shallow and deep cut mortises,adjustable for both door and jamb. Easy to install with clear step by step instructionsand engraved hinge center linesWARNING: This product can expose you to chemicals including nickel and chromium, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65WARNINGs.ca.gov.