This door and window anti collision block window lock protection sliding window limiter is ideal for homes and offices where sliding windows are frequently used. By installing these limiters, you can prevent windows from being opened too wide, thus enhancing security and preventing potential accidents. The sleek design seamlessly blends with your window frames, offering both functionality and aesthetic appeal. Features -Color:Black -Material:nylon -Size:5.00X2.50X1.20cm/1.97X0.98X0.47in -Durable construction: made with Durable materials, this product is designed to withstand daily use and provide long term protection for your windows -Collision protection: effectively prevents window collisions by protecting plastic blocks, reducing the risk of damage and extending the life of your windows -Wide compatibility: compatible with plastic steel sliding windows and horizontal sliding windows, making it a versatile choice for various window types -Controlled window opening: the limiter design allows you to control how far your windows open, providing added safety and preventing accidents -Compact and convenient: lightweight and easy to store, this product is convenient to use and does not take up much space in your home Package list: 10 x window anti-collision blocks