【Excellent Quality】The window blocker is made of high-quality aluminum alloy, durable door and window lock, the arc lock does not rust easily and has a white painted surface, long nails, thick lock body, long-lasting sturdy use. 【Easy to Install】The sliding locks are suitable for all types of doors and windows, before installation, mark the installation hole position with a pen, choose a drill, drill the hole at the marked position and then fix the locks with the corresponding screws. 【Security Lock】Sliding window restrictor locks can provide your home with an extra layer of protection and are an ideal solution for your home security. The lockable window handles including the cushion, which can reduce friction between the interference arm and the windows, protect your windows or doors from scratches. 【Wide Range of Applications】T-type blocking sliding doors suitable for opening doors and windows indoors and outdoors. You can easily lock or unlock sliding window blocks by turning the interference arm.