Modern Privacy Solution: The matte black door knob brings both style and function, making it ideal for bedrooms and bathrooms where privacy is needed. Its sleek finish pairs effortlessly with a wide range of interior décor Easy to Install & Use: This black door knob fits standard pre-drilled holes and installs with just a screwdriver. It locks from the inside with a simple turn button, unlocks from the outside with a coin or flat tool in emergencies Ideal for Bedrooms & Bathrooms: Designed as a bedroom door knob/bathroom door knob, it provides secure privacy while maintaining smooth daily operation. Perfect for households seeking both practicality and a refined look Durable & Secure Build: Made of heavy-duty stainless steel, this privacy door knob is engineered to resist rust, loosening, and wear. Built to provide reliable strength and long-lasting use in any room Universal Interior Fit: These door knobs interior with lock are adjustable to fit 2-3/8" or 2-3/4" backsets and doors 1-3/8" to 1-3/4" thick. Whether you need bedroom door knobs with lock, black door knobs with lock, or versatile doorknobs for interior door, they deliver both performance and style