DOUBLE PROTECTION Swing bar door locks are security locks for sliding doors, allowing people in the room to open the door several inches for identification or ventilation while providing privacy and security for guests and residents. Door locks can also be installed out of the reach of children, so they cannot open the door themselves and provide additional child-proof door protection.HIGH QUALITY - Made of zinc alloy heavy steel with perfect surface treatment, strong and reliable, not easy to rust, and effectively improve safety protection.Easy to install - The package includes mounting screws, which provide great convenience for your installation. Effortless installation on door or door frames in just a few minutes.DIMENSION - 102mm*64mm*20mm(L*W*H), Package includes: 1x door protector and 7x screws. Suitable for all wooden and iron doors for homes and hotels.Widely used: Very practical security door locks, widely used in homes, hotels, guest houses, dorms, storage rooms, windows, etc. to provide reliable protection for themFeatures:It adopts sturdy ball buckle and four-hole fastening design, which greatly improves safety.Widely used for bedroom, bathroom, sliding door, garden gate, pet gates, windows, closet, etc.Three-position design, built-in spring axes can be placed at three angles.Door safety chain lock is designed to identify a caller before the door is completely released, stops powerful access.Allows you to slightly open the door for ventilation or view without a peephole.Package includes:1 x Door Bar Restrictor7 x Screws