Features: The toddler safety lock designs for home sliding door or window, prevent toddler kids opening the door, window, cabinets, closets in unsafe conditions or without parent supervisions. Make from ABS, TPE, adhesive and stainless steel spring to ensure reduction noise when close the door or window. Easy to Install: Our safety door lock equipped with adhesive back glues, strong and large area sticking, easy to installation with strong & enduring bearing. Easy to use for adults to lock the door or window, but difficulty for kids, wide ranges applicable of this kind of lock, suitable for sliding door, glass window, closet or cabinet sliding door. Before purchase please make sure the clearance between window and frame is greater than 1cm/0.39in, or the door may not be moved smoothly after closed. Specifications: Component: ABS, TPE, adhesive, stainless steel spring Quantity: 2Pcs Size: about 8x8.5x1cm/3.15x3.35x0.39inch Package Includes: 2Pcs Window Lock note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.