The Master Lock BCO0103 features a biscuit style door knob with six-way adjustable latch to fit all doors with 2-3/8 in. (60 mm) or 2-3/4 in. (70 mm) backset, square, rounded corners, or drive-in. This door lock offers ANSI Grade 3 performance for exterior locking applications. The polished brass finish provides a sleek appearance. The Limited Lifetime Warranty provides peace of mind from a brand you know and can trust.