Usage Tips:Premium Material: This flush door lock is made of durable stainless steel and zinc alloy, which has good corrosion and heat resistance properties and long service life. . Door lock diameter: 2.95" (75mm); suitable for door hole: 19.7" (50mm); 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 concealed pull ring for a comfortable grip. It can be used to open and close doors or cabinets with a simple pull. Security locks: Recessed locks provide additional security and protection against young children and others who unintentionally open cabinets, drawers, etc. where important documents and objects may be located. Flush locks provide additional security and protection against unintentional opening by young children or others of cabinets, drawers, etc. in which documents and important objects may be located. Designed to fit left or right doors of With a thickness of 35 to 50 mm, they are suitable for both commercial and domestic use.