Enhanced Security Features: This lock includes an exterior keyhole and an interior turn knob, allowing for keyless locking from the inside. Perfect for private spaces such as bedrooms and studies, its reinforced locking system deters unauthorized access. Three-Bar Ball Lock Design: This robust indoor door lock is crafted from thickened zinc alloy, ensuring durability and reliable performance. Ideal for bedrooms and bathrooms, it features a three-pole mechanism that enhances stability and provides a smooth, quiet unlocking experience. Silent Operation Mechanism: Engineered for noiseless functionality, this door handle ensures peace and quiet, making it an excellent choice for nighttime use in residential areas where reducing noise is crucial for comfort. Easy Installation Process: This lock is designed to fit most common door setups with a standard 60mm lock cylinder. It comes with all necessary hardware for a quick installation, ensuring a for your doors without extra adjustments., Weight: 554.5 pounds, Manufacturer: IJSDNVJNDX