Features Applicable Size: Fits rails up to 0.67in wide, suitable for vertical and horizontal sliding doors and windows, providing versatile security options. Easy Installation: Double screw installation with hex wrench tightening, ensuring quick and effortless setup for enhanced door and window security. Aluminum Alloy: Constructed from and oxidation-resistant aluminum alloy, ensuring long-lasting performance in various environments. Prevents Damage: Equipped with rubber buffer gaskets to prevent scratches or damage to windows, enhancing overall door and window security. Multipurpose Lock: Designed to prevent unauthorized entry and protect against potential accidents, making it an essential security accessory for sliding doors and windows. Specification: Item Type: Sliding Lock Set Product Material: Aluminum Alloy Application: Used for vertical and horizontal sliding window and sliding door, etc. Package List: 18 x Sliding Lock Accessories 1 x Bottle Opener Key Package List 18 x Sliding Lock Accessories 1 x Bottle Opener Key