Superb quality The sash blocker window blocker is made of high quality aluminum alloy, durable door and window lock, sash locks not easy to rust and has white paint finish, strong nails, a thick lock body, sturdy for long time use. Easy to install The sliding bay locks are suitable for all kinds of doors and windows, mark the installation hole position with a pen before installation, choose a drill bit, drill the hole at the marked position, then secure the locks with corresponding screws. Security Locks Sash window restriction locks can give your home an extra layer of protection and are a ideal solution for home security. The lockable window handles including cushion, which can reduce the friction between the jammer arm and the windows, protect your windows or door from scratches. Widely used The t type sliding door lock is suitable for opening doors and windows inside and outside doors and windows. You can lock or unlock the sliding window blockers simply by rotating the interference arm.