Description This is a window safety lock which is made of premium material for durable and practical use. Tools to instantly lock sliding doors and windows. No need to drill holes, prevent forced prying of windows from the outside, protect your safety and family safety, easy to disassemble and reuse. Features - Color:Silver.- Material:Aluminum Alloy.- Size:3.50X3.00X2.30 cm/1.38X1.18X0.90 inch.- Made of premium aluminum alloy, which is sturdy and strong, can serve you a long time.- Open the window when the weather is hot in summer, which can improve air circulation, you can use the window locks to fix the window, it can prevent children from falling and prevent thieves.- Not only can it be used to prevent daily crime, but also for long-term outings, opening and closing windows of babies and toddlers, as well as for fighting the elderly.- It can be used in home, office, school and any places you can think of.- The window locks can prevent children from falling and protect the safety of their families while improving air circulation.Packing list: 6 x window limiters (without key)