The material is made of high-quality materials, which can withstand higher pressure and is not easily damaged. High-quality choke cables enhance home safety, health, and child safety. Easy to install, made from steel wire, 19 cm long, comes with self-drilling screws and wrench; requires only a screwdriver or drill for installation. Suitable for use with PVC, aluminum, wood, and composite doors and windows. Ideal for double-hung windows, casement windows, sliding windows, balcony doors, and guest room doors. The special limit design allows for locking and unlocking, providing a 19 cm opening limit while allowing fresh air circulation. Use the wrench to pull out one end of the cable to fully open the window. Color: White. When the cable is in place, the window opening is restricted. Remove the cable from one end using the wrench to allow complete window opening. Features a sleek design with smooth lines, flexible bending capability, and a line distance of up to 18.5 cm. The unique lock core enhances door lock security.