Description: 【Premium Material】: Sliding Window Locks are made of high quality Aluminum Alloy material, precision casting, sturdy, durable, longer service life. 【 Application】: Window Limit Stopper can control the window partially open or closed so as that ensure kids' , and keep curious toddlers and children away from windows, doors, etc. 【Simple Installation in Seconds】: Easy to install, without any additional tools. Each lock comes with a key. 【Compact Size Design】: You can take the security slide window stopper with you for a travel or business trip, providing you with self protection. 【 Essential Nice Helper】: Window Lock Stopper is suitable for families, bedrooms, kindergartens, offices, hotels, schools, and girl travelers. Protect the kids, elders, and even pets in your family. Specification: Material: Aluminum Alloy Color: Argent Size Chart:  Narrow Type 5.98X1.8X2.3CM: suitable fit 10-16mm track Wide Type 5.98X2.3X2.3CM: suitable for 1-10mm track Package Includes: 1 Window Locks Stopper 1 Wrench(6 Pack) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!