Sliding Window Lock Set: You will receive 4 pieces sliding window lock.Size Specifications: The sliding window lock consists of a hex key, a lock body and a lock cylinder; the total length of the hex key is 49mm, the size of the lock body is 30*24*24mm and the hole diameter of the lock cylinder is 10mm.Aluminum Alloy Material: These window locks are made of aluminum alloy, thickened material, anti-corrosion and rust-proof, not easy to deform,Easy to Install: No punching window lock, the yellow plastic handle design allows you to get started better. When installing, just insert the hex wrench into the hole, determine the installation position on the window track, turn the wrench to adjust the window lock to fix it, and the installation is quick. Wide range of applications: Sliding window locks are suitable for all kinds of sliding windows and sliding doors to improve family safety. (Note: Not applicable to the middle window track)