1. Material: 304 stainless steel, alloy, ABS 2. Uses: the hidden danger of children opening the window, preventing thieves from climbing the bed window and stealing 3. Installation method: screw 4. ABS cover and rubber sleeve to reduce rain erosion and wire wear 5. 49 twisted, 304 stainless steel ropes, multi-strand in one, safe tensile, super load-bearing 6. The size of the window opening depends on the installation location. The larger the staggered distance, the smaller the window opening space. 7. Solid thickened lock, strong and durable, anti-rust
