Tulip style door knob with lock and deadbolt are best used for exterior locking applications Door lock and deadbolt offer ANSI Grade 3 performance for exterior locking applications Polished brass finish provides a sleek appearance Six-way adjustable latch fits all doors with 2-3/8 in. (60 mm) or 2-3/4 in. (70 mm) backset, square, rounded corners or drive-in; Deadbolt is four-way adjustable for doors with 2-3/8 in. (60 mm) or 2-3/4 in. (70 mm) backset, square or rounded corners Includes one tulip door knob with lock and single cylinder deadbolt; Each key opens both door knob and deadbolt