What you will getYou will receive 4 pcs sash jammers coming with suffient corresponding fixing screws and pads,which ensure the quality and safety of installation.These quantities and configurations can meet your daily needs.Alloy MaterialThe window security anti-theft lock is made of strong zinc cast alloy construction, durability and quality guaranteed. It has a white paint finish, not easy to rust, wear-resistant, a good match with your windows and doors.Easy to Install and UseThe installation process of window anti-theft lock is very simple.Following the installation instructions provided, you can complete it in just a few minutes.Just twist the interference arm to lock or release the window sash, fully ensuring safety.High SecurityOur window sash jammer, a great accessory for increased home security, blocks the possibility of thieves entering the room and protect your children and pets.Giving you a bit more peace of mind knowing you have extra locks on our windows.Wide Applicationthe multifunctional sash jammer adaptation is broad, and it can rotate at 180 degrees, suitable for doors and windows that open inward and outward.Whether your window is left or right to open, our window locks can be used.