Feature: 1. Prevent Children from Falling: Are you worried that your children are not safe enough at the window and door, our adjustable sliding window locks can prevent children from falling and protecting your family's safety. 2. Suitable Track: 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. 3. Easy Installation: No additional tools required, each sliding window lock is fitted with hex wrench, which is secured to the track by key control. 4. Aluminum Alloy and Stainless Steel: This sliding window lock is made of aluminum alloy frame and stainless steel screws for multiple reuse. Strong, wear resistant and durable, exquisite workmanship. 5. Versatile: Sliding door window locks can be easily applied to most environments, such as living room window, kitchen sliding doors, bedroom closets, offices, etc. Specification: Item Type: Adjustable Sliding Window Lock Material: Aluminum Alloy Frame, Stainless Steel Screws Single Window Lock Size: Approx. 6 x 2.4 x 2.4cm / 2.36 x 0.94 x 0.94in Applicable Track Height: More Than 1.5cm, Approx. 1.5cm / 0.59in Applicable Track Thickness: Not More Than 1.6cm, Approx. 1.6cm / 0.63in. Package List: 15 x Sliding Door Window Lock15 x Baffle15 x Hex Wrench