【Superb Quality】The sash blocker window blocker is made of high quality aluminum alloy, durable door and window lock, not easy to rust sash locks, and white paint finish, strong nails, a thick lock body, sturdy for long time use. 【Easy to install】Fix the files locks with corresponding screws. 【Security locks】The security restriction locks sash windows can give your home an extra layer of protection and are an ideal solution for home security. includes the pad, which can reduce friction between jammer arms and windows, protect your windows or door from scratching. 【Widely Used】T type sliding door blocker is suitable for opening of doors and windows inside and outside doors and windows. interference bras.