slbrillreSafety Locks: This sliding window lock for home and office, you can either keep the windows partially open or closed to avoid any hidden dangers that children and pets might climb on the window. It also prevents burglars from entering. Wide Application: Window locks designed for horizontal sliding windows, vertical sliding windows and sliding doors like patio doors, sliding glass doors, etc. Not suitable for plastic window frames. Sturdy Material: Sliding window lock made of aluminum alloy, durable and rust-proof, reusable. Comes with plastic protective gaskets to prevent scratches or damage to the window. Size: Before purchasing these window security locks, please make sure your window track thickness is not more than 16mm; track height is more than 15mm. (Note: Not suitable for the track in the middle of the window). Easy Installation: This window lock with key, 3-step quick installation. No tools or drilling required. Use double hole locks for heavy windows/doors for added security. Size: 24*24*30mm Color: Silver Quantity: 1pc