[High Quality Construction] The sash blocker/window blocker is crafted from premium aluminum alloy, ensuring durability and resistance to rust. Its robust design features a sturdy lock body with a protective white paint finish, built to last and withstand daily use. [Simple Installation] This sliding bay lock is compatible with various types of doors and windows. To install, simply mark the drilling position with a pen, select the appropriate drill bit, create a hole, and secure the lock in place using the provided screws. Quick and hassle-free installation for your convenience. [Enhanced Security] Safeguard your home with sash window restriction locks that provide an extra layer of protection. The lockable handles come equipped with cushioning to minimize friction between the jammer arm and the window, effectively preventing scratches while ensuring secure locking. [Versatile Use] The T-type sliding door stopper is suitable for both internal and external doors and windows. Easily lock or unlock by rotating the interference arm, making it ideal for enhancing safety in homes, apartments, or office environments. Whether you need to secure sliding glass doors, restrict the opening of windows for child safety, or simply enhance your home security, this sash blocker is the perfect solution. Its combination of sturdy construction, easy installation, and versatile applications makes it an essential addition to your home safety measures.