This sliding window stopper lock is suitable for homes and offices. The sliding window lock can maintain indoor air circulation while avoiding the hidden dangers of children and pets climbing on windows. What's more, it can keep thieves out. Our window locks are very small and convenient to carry to other places where you need our window locks. Portable, easy to move from window to window or take it with you. The sliding window lock is made of aluminum alloy, durable and rustproof, reusable. The sliding window lock consists of a hex key, a lock body and a lock cylinder. Each window lock comes with a hex key. You can use an adjustable wrench to slowly turn the nut to secure it to the window track. Installation only takes 5 minutes. Sliding window locks can be easily applied to most environments, such as patio doors, sliding glass doors, hotel sliding windows , residences, hospitals, schools and offices to provide a safe environment for children.