Window Restrictor Lock UPVC Child Safety, Stainless Steel Door Chain With Button Black 7.8 inches

Material: The stainless steel door chain has excellent resistance and corrosion resistance, can effectively impact and kicking, not easy to break. -theft chain, -theft buckle length: 123mm / 4.9inch and 63mm / 2.5inch width: 22mm / 0.86inch, total length: 13inch; 7.8 inches chain length; material thickness: 0.06 inches thick. Colour: Black. Security door - easy to install and operate; cannot be unlocked from the outside, easy to unlock from the inside Button Design: Door chain keyhole has a button, you need to press the button to put or remove the chain. The chain will not accidentally slip off due to children playing or other collisions. Window limit locks are primarily designed for child safety, restricting the opening distance of windows to effectively avoid the risk of children or infants falling out of windows.