The material is made of high-quality materials, which can withstand higher pressure and is not easily damaged. Superior Safety High-quality choke cables improve home safety, health and safety, and baby/child safety. Easy to install Made from steel wire, 19cm long, comes with self-drilling screws and wrench, requiring only a screwdriver or drill to install. Widely used in PVC, aluminum, wood, composite doors and windows. Used for double-hung windows, casement windows and sliding windows; balcony doors, guest room doors, etc. The special limit design for locking and unlocking provides a 19cm limit and fresh air. Use a wrench to pull out one end of the cable to fully open the window. Color: White When the cable is in place, the window is limited in how far it can open. Using a wrench, you can remove the cable from one end and open the window completely. It has a novel shape, smooth lines, can be bent at will, and the line distance can reach 18.5 cm. The unique lock core greatly increases the security of the door lock. Jinyu store products