Brinks 2112-109 Ball Style Door Knob with Privacy Key for Bedroom and Bath, Antique Brass Ball knob fits all doors 1-3/8" to 1-3/4" thick Perfect for use in the bedroom or bath Comes with a privacy key to unlock from the outside if necessary 4-way adjustable latch that fits any 2-3/8" or 2-3/4" backset Lifetime Warranty