1、Dustproof and Soundproof: Window lock stopper can effectively prevent outside dust, noise, wind and rain from entering the room, keeping the indoor environment clean and quiet. 2、Smooth Pushing and Pulling: Window sealing lock stopper block is designed and made of reasonable material, which can effectively reduce the friction of the window and the resistance of the window, so that the window can be pushed and pulled more smoothly, making your life more convenient. 3、Maintenance Safety: Window lock stopper block can effectively protecting limited use of the window and prevent the window from being damaged by overuse. At the same time, it is strong and durable, and can provide extra protection in terms of burglary and fire prevention. 4、Aesthetic and Practical: Window sealing lock stopper has a simple and elegant design, which looks very beautiful with the window and also increases the practicality of the window, making your home decoration more stylish. 5、Easy to Install: Window lock stopper block does not require any professional skills and can be easily installed on your own window, which not only makes it easy to maintain and replace, but also saves your time. 4 x Window Lock Stopper1 Pack x Screws Item Type: Window Lock StopperMaterial: ABSWeight: Approx. 62g / 2.2in