Welcome to our store! 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 diameter of the lock cylinder hole is 10mm. Material made of aluminum alloy: these window locks are made of aluminum alloy, thickened material, anti-corrosion and anti-rust, not easy to deform, Easy to install: no punched window lock, the design of the yellow plastic handle gets you started better. When installing, just insert the hex key into the hole, determine the installation position on the window rail, turn the key 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 security. (Noticed : Does not apply to the middle window track) Delivery quantity: 4 pieces (with accessories) Product color: Silver Product size: 30*24*24mm Note: Manual measurement, please allow 1 - 3cm error!!! 100% Satisfaction - Our customers are our priority. If you find any problems with the products after receiving the goods, such as damage and incorrect quantity, please contact us immediately. We do our best to provide you with satisfactory after-sales service.