General description Our 2-Piece Set Stainless Steel Aluminum Alloy Window Lock is designed to enhance the security of sliding doors and windows. Made from high-quality materials, this lock is both corrosion-resistant and wear-resistant, ensuring durability and longevity. It effectively prevents unwanted access, making it ideal for homes, offices, and child-safe environments. Technical specifications Material: Aluminum alloy and stainless steel Size: 4.5 x 4.2 cm Package Contents: 2 child-proof locks, 4 keys, 4 hole plugs, 4 lock pieces, 12 screws Measurement allowed error: +/- 1-3 cm Installation Mounting options: Hole punching (hole cover) installation method For maximum security, install locks on the top and bottom of the door or window Usage Each lock comes with 2 universal keys for easy unlocking Locks can be used to secure sliding or patio doors, preventing children from opening them from the outside Designed for most hinged or sliding doors Other information Color: Black Note: