Special Feature:Rust Resistant Lock Type:Key Lock Material:Aluminum Recommended Uses For Product:Indoor Style:Modern Number of Pieces:2Included Components:Sliding locks Controller Type:Hand Control Shape:Square Control Method:App Part Number:H-WINLOCK-DOU-2 Item Weight :4.8 ounces Package Dimensions:3.3 x 3.2 x 0.6 inches Special Features:Rust Resistant Batteries Required?:No Features: 1. Double open design, each lock is equipped with hex key, just holding on the track by hex key control, no additional installation tools. 2. Made of durable material, sturdy and rust resistant, which can serve you for a long time.< br>3. Wide application, the security locks can keep the windows or aluminum alloy door partially open or closed, burglar-proof and prevent children from falling etc. Installation: Step 1: Place the lock in a suitable position on the rail. Step 2: Rotate the key to secure the lock. Step 3: Remove the key. Note: Not applicable to the middle track of the window, please check your window track before buying. Specifications: Name: Sliding Window Adjustable Security Locks Material: aluminum alloy Size: 6 x 2.4 x 2.4 cm/ 2.4 x 0.94 x 0.94 inch (L * W * H) Package include: 2 x Sliding Window Locks with Key About this item Sliding Window Security Lock can protect the safety of their families while improving air circulation, as a stopper lock to fix the screen window. SIZE: Approx. 6 x 2.4 x 2.4 cm / 2.4 x 0.94 x 0.94 inch (L * W * H), suit for track height more than 1.5 cm / 0.6 inch, track thickness no greater than 1.6 cm / 0.63 inch. MATERIAL: Made of aluminum alloy, sturdy and durable, rust-proof and reusable, the key has a yellow plastic handle for convenient rotating, the adjustable security lock comes with plastic protection gasket to prevent scratches or damage the window. INSTALLATION: There is no need extra tools or drilling, holding on the track by hex key control, the double open design obtains stronger friction force for more solid and security. APPLICATION: Can be easily used to most environments, as horizontal / vertical sliding windows, sliding doors etc., for keeping the windows partially open and closed, to prevent children from falling and burglar-proof. See more product details Sliding Window Security Lock can protect the safety of their families while improving air circulation, as a stopper lock to fix the screen window. SIZE: Approx. 6 x 2.4 x 2.4 cm / 2.4 x 0.94 x 0.94 inch ( L * W * H), suit for track height more than 1.5 cm / 0.6 inch, track thickness no greater than 1.6 cm / 0.63 inch. MATERIAL: Made of aluminum alloy, sturdy and durable, rust-proof and reusable, The Key has a Yellow Plastic Handle for Convenient Rotating, The Adjustable Security Lock Comes with Plastic Protectice Gaskets OR DAMAGE The W. Indow. Installation: There is no need excels or drilling, holding on the track by hex key control , the double open design obtains stronger friction force for more solid and security. APPLICATION: Can be easily used to most environments, as horizontal / vertical sliding windows, sliding doors etc., for keeping the windows partially open and closed, to prevent children from falling and burglar-proof.