Mortise lock template designed to prep wooden or metal doors to accept Arrow A or B Series mortise locks with thru-bolted escutcheon or rose trim. All hole locations are piloted with hardened drill bushings. Larger holes required for cylinder or spindles are located and drilled first with a 1/4" diameter hole, this serves as a pilot hole for the correct size hole saw. All hole locations on the template are identified for use. Requires HIT-45 Clamp with HIT-45ML1 Locator.