Features: Locks Security : The locks is apply for sliding win-dows, sliding doors ,vertical doors. Please make sure your win-dow the height of track more than 0.6 inch (1.5cm) high and the width no more than 0.63 inch (1.6cm) before ordering win-dow safety locks. Wind-ow Locks with Vertical Key : The sliding win-dow locks come with a vertical key, When your win-dow rail is higher than the keyhole, the vertical key can help you lock it easily. Easy to install : The sliding win-dow door lock comes with a hex key, adjust the Win-dow Gaskets position, rotate the key slowly through the hole, just keep it on track with the key control. Slowly move the key out in reverse. Specification: Material:‎Aluminum Color:Silver/Black Size:30*24*22mm Package Contents: 2* Lock Stopper Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.