Enhance the security of your doors with the LDEXIN Stainless Steel Hidden Manager Tubewell Key Mortise Lock. Made from durable stainless steel, this lock offers excellent anti-rust performance and long service life. It is ideal for use on fire doors, framed doors, invisible doors, and more. Easy to install with just a screwdriver, this lock comes with all necessary installation parts. LDEXIN guarantees high quality and offers a return service if you are not satisfied, ensuring you receive a product that meets your expectations.