For bedroom or bathroom doors. Both knobs locked or unlocked by turnbutton inside, or emergency key outside. All metal components. Solid steel latch assembly. Seamless one-piece knob for extra strength. Easy installation. Square spindle for right or lefthanded installations. 6-way adjustable latch fits 2-3/8 in to 2-3/4 in square corner, radius corner, or drive-in applications; includes both square and 1/4 in radius corner strikes.