Features:High Quality Material: Made of stainless steel, it is sturdy and durable. No punching: Each lock is equipped with a key for, slowly twist the key for through the hole, just control with the key for, No additional installation tools are required. Controllable width: freely control the width of the window to prevent children or pets from leaving the window. Must-have items: Secure windows, prevent children from falling, prevent thieves. Suitable for families, hotels, schools, kindergartens, etc. Specifications:Material: stainless steel< /p> Size: approx. 66x35x31mm / 2.60x1.38x1.22inch Note: Please allow 1-2cm errors due to manual measurement, Make sure you do not mind before ordering. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 2x Window Security Lock (with for key)