【Privacy Function】The brass door knob has a privacy key, push button locking for use on bedroom and bathroom doors or doors requiring privacy. | 【Adjustable Latch】Latch can be adjusted to 2-3/8 or 2-3/4 inch, fit doors 1-3/8” to 1-3/4” inch thickness. | 【Easy to Install】Only need a door and a tool set. No need for professional door fitters, you can do it yourself. | 【Complete Accessories】The crystal door knob Contains all accessories and installation instructions. If any accessories are missing, please contact us. | 【Service】 If you have any question about the door knobs, please contact us through messages, we'll solve for you as soon as possible.