General description This CSPARKV 2PCS Window Safety Stopper is designed to enhance child safety by providing a secure locking mechanism for sliding windows and doors. It allows for partial opening, improving air circulation while maintaining security against forced entry. Technical specifications Material: Sturdy metal with rubber Type: Sliding window and door lock Durability: Impact resistant and reusable Installation Instant installation without additional tools Compatible with various window sizes Usage Prevents windows from being forced open Enhances child safety by preventing unauthorized access