Detailed Dimensions: Crystal head maximum diameter: 2-3/8”(60mm). Adjustable latch 2-3/8”(60mm) or 2-3/4”(70mm). Fit standard door thickness of 1-3/8” to 1-3/4”(35-45mm) Exquisite Appearance: Elegant ball crystal head with satin nickel base makes your home shine. The smooth crystal heads of the bedroom door knobs are more comfortable to touch, you can feel the reliable quality every time you use it Strong Construction: The base of the indoor door knob is made of high grade zinc alloy, which prevents rusting and is fingerprint resistant. The high-quality material is also easy to clean, so you don't have to replace it frequently Privacy Function: The privacy door knob is locked internally by a push-button and unlocked externally by an emergency release hole. Modern interior door knobs are suitable for places that require privacy, such as bedrooms, bathrooms, offices, etc Simple Installation: Easy to install, just follow the clear instructions and you can install crystal door knobs in a flash. All you need is a screwdriver to update your home and experience the joy of DIY Lepushom Crystal Door Knobs Interior, Elegant Glass Door Knobs, Keyless Privacy Door Locks for Bedrooms and Bathrooms