Privacy FunctionOur antique door knobs great for interior doors that require a locking mechanism, such as bedroom/bathroom. Push button lock inside, keyless outside, but you can use a hex key/any thin tool to insert into the release hole to open the door Premium Door HandleThe crystal door knob is clear fluted glass shape, with zinc alloy rosette and plate, antique brass finish, heavy duty and solid for last using. This is an elegant addition that will surely bring you more joy and compliments SizeThe glass interior door knobs are suitable for left/right hand doors, latch can be adjusted to 2 3/8 or 2 3/4 inch (60mm or 70mm), suitable for door thickness 1 3/8 to 1 3/4 inch (35-45mm) Easy InstallationIncludes all accessories and installation instructions, suitable for any new installation or refurbished standard door, please check the installation accessories before installation After-sales serviceWe are committed to providing every customer with a satisfactory purchas