Adjustable Security Door Locks Anti-theft Protection Lock Home Safety Latches Aluminum Alloy Sliding Door And Window Safety Lock Description: Installation Steps 1. Remove The Inner Handle 2. On The Upper Hole Position 3. Handle Installation Through Screw 4. Fixing Mark Of Strut Base 5. Unscrew The Hole 6. Fix It With Screws Specifications: 【Type】: 1pcs Limit Wind Hook, For Holding Open A Window. 【Material】: Thicker Material, Not Afraid Of Strong Wind, High Hardness, Not Easy To Break, Integrated Body, Solid And Simple Structure, Anti-Rust, Anti-Corrosion, Nondeformable, Polishing Processed Surface, Top Grade Appearance, Durable To Use. 【Function】: Ideal For Fixed The Position Of The Windows, Wind-Proof, To Control Window Open And Safety Silent Holders. 【Installation】: Screw Fixing Type, Consist Of Hook And Eye Closure Lock, Come With Matched Mounting Screws, Easy To Use. Package Included: Wind Hook*1 Chip*1 Screw *1 Notes: 1. Due to different screens and lighting, product photos may well range barely from actual colors. 2. The product size is manually measured, please allow 1-2cm difference, thanks in your understanding!