The door and window limiter collision block window lock protection sliding window limiter is an essential for maintaining the safety and integrity of your sliding windows. By installing these limiters, you can prevent windows from being opened too wide, reducing the risk of accidents and enhancing security. The product's sleek design and durable construction make it a valuable addition to any home or office. Features - Color: White -Material:nylon - Size: 5.00X2.50X1.20cm/1.97X0.98X0.47in -Durable and reliable: crafted with Durable materials, this product ensures durability and reliable protection for your windows, providing long term performance -Prevents damage: protects plastic blocks from collisions, preventing damage to your windows and extending their lifespan -Versatile application: suitable for use with sliding windows and horizontal sliding windows, offering versatility in application -Limiter design: features a limiter design that allows you to control the opening range of your windows, enhancing safety and usability -Lightweight and convenient: the product is lightweight and easy to store, making it a practical addition to your home without taking up much space Package list: 10 x window anti-collision blocks