1、KEEP CHILDREN FROM FALLING: Did you worry about that your children are not safe enough at the window and door, this adjustable sliding window locks can prevent children from falling and protecting your family's safety. 2、APPLICABLE TRACK SIZE: This sliding window lock is suitable for track height over 1.5cm or 0.59in and suitable for thickness no more than 1.6cm or 0.63in. Strong and robust, wear resistant and durable, exquisite workmanship. 3、ALUMINUM AND STAINLESS STEEL: The sliding window lock kit is with 15pack and made of aluminum alloy frame and stainless steel screws for multiple reuse. 4、SIMPLE FOR INSTALLING: These is no additional tools required, and each sliding window lock is fitted with hex wrench, which is secured to be fixed on the track. 5、WIDE USE SCENES: Sliding door window locks can be easily applied to most environments, such as living room window, kitchen sliding doors, bedroom closets, offices, etc.