【What you will get】Pack of 2 Sash Jammers,comes with corresponding fixing screws and pads.These quantities and configurations can meet your daily needs.【Alloy Material】The window sash jammer is made of solid cast zinc structure ,not easy to break and rust, with a durable powder-coated surface, wear-resistant.White powder coated finish is a good match with your windows and doors. It can be used for a long time.【Easy to Install and Use】Simple installation within minutes and easy to use. You just need follow the installation instructions provided,and you can use the included fixing screws to easily install the window sash jammers. Just twist the interference arm to lock or release the window sash.【High Security】The sash window restrictor locks can give your home an extra layer of protection.A sash jammer lock on the window can protect your children and pets, and also prevent thieves from entering your home. Makes you feel a sense of security!【Wide Application】Suitable for uPVC windows and rebated doors, these multifunctional sash jammers use to increase protection of the bedroom door, bathroom door, balcony window. Whether your window is left or right to open, our window locks can be used.