Probrico Black Door Knobs for Bedroom Bathroom Interior Door Knob with Round Ball Matte Black Privacy Door Knob 6 Pack

Knobs are made of stainless steel which has high density and high strength; Confirm with ANSI Grade 3 Exceeds 200 000 cycles;Universal handing; fits both right handed and left handed doors; Latch has adjustable backset 2-3/8"" to 2-3/4"" to fit all standard door preparations; Function Available: Privacy: with lock function but keyless you could locked inside but can't open outside as there is no key. Usually for Bedroom/Bathroom door. (could open with coin in emergency)