Features: Enhances your home security with the deadlock lock featuring technology, allowing quick rekeying in seconds and installation with just a screwdriver for convenience. Crafted from strong alloy, this single sided lockset offer adjustable backsets (2 3/8” or 2 3/4”) and fits standard doors (1 3/8” to 1 3/4” thick), ensuring compatibility and robust defense . Ideal for homeowners, landlords, or renters seeking stable access control, this lock provides keyed exterior entry and internal rotation for enhanced residential or commercial security. Designed for exterior doors, apartments, or offices, its internal locking mechanism and key operated external access deliver peace in congested areas. The erosion resistant alloy construction and straightforward installation process (includes all hardware and instructions) make it a long lasting upgrade for any standard door setup. Specifications: Component : alloy Diameter: about 65mm/3inch Package Includes: 1 set deadlock Lock note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.