Window locks are suitable for sliding , sliding doors, and vertical . Before ordering a window lock, please measure the size of the window track. The height must be 0.48 inches (1.22 centimeters) and the width must be less than 0.61 inches (1.55 centimeters). No additional installation tools or drilling required, 3-step quick installation. Step 1, place the lock in the appropriate position. , insert the gasket to protect the window guide from scratches. You can easily repair any part of the window lock using the vertical or hexagonal keys, making it easy to reuse and reinstall. It can the safety of your family, control the partial opening or closing of , effectively reduce the risk of children and pets falling from high , and protect your property from damage during heavy rain and by locking the . Upgraded protection design, each of our window locks has two fixing holes that secure them to the window track, greatly enhancing the grip of the lock. Double hole locks are used on heavy-duty doors and to increase safety. [ Package Includes ]: 8 sets of sliding window locks, including 8 sliding window locks, 2 keys, and 8 washers., Manufacturer: Aundhegrtt