Made of quality zinc alloy to ensure a stable and durable invisible lock. Suitable for doors with a thickness of 35 to 50 mm. The lock has a smooth and durable galvanized surface and is designed to be easily installed or removed at any time without the use of tools. The invisible door lock has a single-sided locking design with a round handle and a small lock hole for easy opening and closing. The invisible door lock is not only practical, but can also be used as a wall decoration to add color and beauty to your home. to your bedroom, children's room and other places. Invisible door locks are an indispensable equipment in modern life, not only for your safety and privacy, but also for the expression of the pursuit of quality of life. Features: * Model: Invisible flat corner door lock. Functional use: locking interior doors, locking gates. Material: zinc alloy. Installation range: 35-60 THKes doors can be mounted. Panel material: zinc alloy. Door height: 35-50mm. Locking method: