Newgard Tulip Antique Brass Privacy Knob. Features include a 25 year warranty on parts and finish. Newgard locks meet or exceed ANSI Grade 3 residential requirements. Additional features include an adjustable latch with radius corners to fit either 2-3/8" or 2-3/4" backset, will fit either a 1-3/8" or 1-3/4" thick door, a durable finish with a 25 year warranty. The only tool you need to make installation easy is just a screwdriver. All necessary screws and latch plates are included in the package.