Self-defined ventilation spacing: This window safety lock can be rotated freely 180 degrees, flexibly adapting to different angles of window opening. The ventilation spacing can be defined according to the needs, and the size of the window can be adjusted to ensure safety while maintaining indoor ventilation. Upgraded non-marking glue: The bottom of the lock body is made of upgraded non-marking glue, which has strong adhesion and does not damage the surface of the furniture. At the same time, it will not leave any traces when it is disassembled, keeping the window clean and beautiful. High-strength stainless steel wire: It is made of strong stainless steel wire wound with multiple strands, has tensile strength, can effectively prevent cutting and pulling, is durable, and can effectively protect the safety of family members. A variety of fixing methods: There are two fixing methods of punching and no punching. Suitable for different window types, no matter which method you choose, it can ensure the stability and firmness of the lock body. Wide Application: This security lock can be used as a refrigerator lock, window lock, cabinet lock, etc., very suitable for home life. The appearance of the lock body is simple and elegant, and it is perfectly integrated with the furniture. It not only provides safety protection, but also does not affect the appearance and use.