HIGH QUALITY MATERIAL:The Window Lock is made of high quality PVC.which is durable,waterproof and moisture resistant.and easy to clean.Suitable for providing extra security to your doors and windows. EASY to INSTALL: You only need to twist the jamming arm to lock or release the chassis. Mark the position of the installation hole with a pen before installation, choose a drill bit, drill the hole at the marked position,then fix the lock with screws. UNIQUE DESIGN: The chassis jammer with anti-wear pad, which can reduce the friction between the jammer arm and the windows, protect your windows or your door from scratches. Widely Used: The white Latches Block Handle almost matches any style of home decoration. It is suitable for opening doors and windows indoors and outdoors. the outside of doors and windows, not for sliding windows. Packing List:4*Security Locks8*Screws Note: The data is all manual measurement, if there is please allow 1 - 3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received Shipping Quantity: (according to the main image)