Superb QualityThe sash blocker window blocker is made of high quality aluminum alloy, durable door and window lock, not easy to rust sash locks, and has white paint finish, strong nails, 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 position of the installation hole with a pen before installation, choose a drill bit, drill the hole at the marked position, then fix the locks with the corresponding screws. Security LocksSash window restriction locks can give your home an extra layer of protection and are an ideal solution for home security. The lockable window handles including cushion, which can reduce friction between jammer arm and windows, protect your windows or door from scratches. Widely UsedT type sliding door locks suitable for opening doors and windows inside and outside doors and windows. You can lock or unlock the sliding window stops simply by turning the interference arm.