4sets Sliding Window Locks,with Key for Home,office and Public Places

[High quality]:Sliding window lock are made of aluminum alloy, durable and rust-proof, there's a yellow plastic cover outside the key handle,reusable. Comes with plastic protectice gaskets to prevent scratches or damage to the window.[Size]:30mm x 24mm x 24mm/1.18inch x 0.94inch x 0.94inch(L x W x H),Make sure the track heights more than 1.5 cm/ 0.6 inches, track thickness no more than 1.6 cm/ 0.63 inches, not applicable to the middle track of the window, please check your window track before buying.[Easy to install]:No hole installation saves time and effort. All you need to do is to spin the key through the hole and fix the window stopper on the track. No additional installation tools are needed. You can easily fix the window lock at any part with the vertical key. Easy to reuse and re-install.[Application]: Can be easily applied to most environments; Effectively reduce the risk of children and pets falling from high windows. It ensures your family members safety.colour: silver + yellowMaterial: Metal+PlasticPackage Contents:4 x window locks4 x keys4 x transparent gaskets1 x vertical hex keyOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.