General description The Window Locks set includes 3 metal safety locks designed to enhance security and prevent falls, making them ideal for homes with children. Constructed with a 304 stainless steel lock core and a zinc alloy electroplating surface, these locks are anti-corrosion, anti-rust, and durable. The unique design features an 18cm safety cord that allows for a restriction of 11-18cm, enabling fresh air to circulate while keeping windows secure. Technical specifications Material: 304 stainless steel lock core Surface: Zinc alloy electroplating Safety cord length: 18 cm Restriction range: 11-18 cm Installation Easy installation with self-adhesive glue No drilling required Simple and convenient setup Usage Suitable for homes, hospitals, schools, universities, and offices Compatible with double-hung windows, sash windows, movable night windows, and sliding windows