Wista Mortise Door Lock Set.

Design: It includes a long, decorative backplate with a curved lever handle and a built-in keyhole.Mechanism: As a mortise lock, the "box" (the actual locking mechanism) is installed into a deep pocket cut into the edge of the door.Security: It typically comes with a set of three keys and a strong double-locking mechanism for enhanced security.Durability: Most models are crafted from high-quality zinc alloy or brass to ensure they are rust-free and durable.