Main body size: 24*60mm. Not suitable for window center track, please check your window track height and thickness before purchasing. Silicone against the outside in the lock. Turn the key clockwise to lock, remove the key to prevent children or the elderly from opening it by mistake (be careful not to lose the key to prevent the lock from being removed). No additional installation tools needed, easy to install. Adjustable window lock bar can be freely fixed in the desired position, allowing control of ventilation while effectively preventing unauthorized entry and reducing the risk of falls for children, pets, and the elderly. Color: as shown. Package includes: 6 sliding window locks, 6 hex keys. Note: Data is measured manually, please allow 1-3cm error. Color may vary slightly due to light and display, actual product received shall prevail.