Feature: 1. Punch?free, no damage to window and window frames, suitable for most plastic steel alloy window. 2. When the weather is hot, open the screens for ventilation, and lock the screens with window locks. 3. Effectively prevent children from falling and prevent thieves from entering the house. 4. Selected high?quality aluminum alloy materials, strong and durable, beautiful and practical. 5. Need to use the key to control the position on the track, high safety, long-term use. Specification: Item Type: Window Lock Material: Aluminum Alloy Weight: Approx. 37g / 1.3oz Product Size: Approx. 3x2.5x2.5cm / 1.2x1.0x1.0in Scope of Application: Doors and window, etc.. Package List: 1 x Window Lock1 x Key1 x Gasket Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.