Master Lock Keyed Entry Door Lock, Biscuit Style Knob, Satin Nickel, BCO0115 DOOR LOCK APPLICATION: For indoor and outdoor use; Best used for residential exterior entry doors EASE OF USE: Keyed entry with interior turn button; Turn button to unlock position to disengage latch SLEEK APPEARANCE: Satin nickel finish upgrades your look or matches existing door hardware FLEXIBLE INSTALLATION: Six-way adjustable latch, fits 2-3/8 in. or 2-3/4 in. backset, square, rounded corners, or drive-in SPECIFICATIONS: Entry door lock offers ANSI grade 3 performance for exterior locking applications; Includes two keys