Premium Material: This recessed door lock is made of durable stainless steel and zinc alloy, which has good corrosion and heat resistance and a long service life. Door lock diameter: 75 mm (2.95\"); suitable for door holes: 50 mm (19.7\"); door thickness: Door thickness: 35 mm to 50 mm (1-3/8\" to 2\"); Door center-to-center distance: 60 mm (2.36\"). Pull Ring Design: The lock has no protruding handle and is designed with a hidden pull ring for a comfortable grip. It can be used to open and close doors or cabinets with a simple pull. Safety Lock: Recessed locks provide extra security and protection against attacks. small children and others who accidentally open cabinets, drawers, etc. where important documents and items may be located. Recessed locks provide extra security and protection against theft. accidental opening by small children or others of cabinets, drawers, etc. where documents and important items may be located. Designed to fit left or right doors With a thickness of 35 to 50 mm, they are suitable for both commercial and domestic use.