1. Exquisite Craftsmanship: This door window lock stopper is durable and well-made, featuring an aluminum alloy frame and stainless steel screws that can be used repeatedly. Its solid construction ensures long-lasting security and safety for your home or office. 2. High Adaptability: This security window door lock can easily adapt to most situations. By keeping the window partially open and closed. 3. Safe and Reliable: The door frame security lock provides an extra layer of security for sliding doors and windows. 4. Adjustable Design: The window limit stop lock 's design is adjustable to fit different door and window sizes, making it a convenient tool for securing your home or office. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Application: Bedroom Scope of application: doors and windows Colour:black Material:Aluminum alloy Package Contents: 20 x Sliding Door Window Lock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.