【Privacy Function】The crystal doorknobs for any interior door that requires privacy such as bedroom or bathroom. 【 Keyless 】 The interior door knobs comes with a push-button or thumb turn which allows the door to be locked. They can be unlocked from the outside by an emergency release with hex key. 【Adjustable Latch】 Fits door thickness 1-3/8" to 1-3/4",latch can be adjusted to 2-3/8" or 2-3/4" . 【Easy to Install】The glass knobs Contains all Accessories and Installation Instructions.You can easily install it yourself 【Service】If you have any questions about this octagon crystal knob, please contact us. Privacy door knobs are typically used on any interior door where privacy is a concern, such as a bedroom or a bathroom door. The inside knob of the set comes with a push-button or thumb turn which allows the door to be locked. They can be unlocked from the outside by an emergency release. Lock and latch are included.