Description 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 INSTALL: You just need to turn 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 mark position, then secure it to lock with screws. SAFETY: Sash Jammer for increased home security on your doors and windows.It can be attached to any entry point from home and can arrest criminals.Give your home an extra layer of protection. UNIQUE DESIGN: The chassis jammer with anti-wear pad, which can reduce the friction between the jammer's arm and the windows, protect your windows or your door against scratches. Widely used: White Latches Handle matches almost any decorating style in the home.It is suitable for opening doors and windows inside and outside of doors and windows, not for sliding windows. package4pcs Window Lock.