Routing template used to mortise HESConcealed Hinges into standard andcustom size doors. Reusable, constructed with durablewood and metal components. Allows for shallow and deep cut mortises,adjustable for both door and jamb. Available in single and multi-hinge sets. Easy to install with clear step by stepinstructions and engraved hinge center linesMULTI-HINGE SETS: Adjustable hinge height placement. Saves time by routing 2-3 hinges withminimal effort. Adjustable connecting plates made ofdurable aluminum for precise fit.WARNING: 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.