Easy-to-install locks, perfect for window security. - Quantity: Set of 6 - Applicable width: 28-42mm - Purpose: Window security Not sold individually Thank you for viewing. Although unused, these items have been stored at home. Please purchase only if you understand this. One item is unused but has been opened, so consider it a bonus. I think it can still be used. These were for use after the current apartment renovation, but I will not be using them, so I am selling them.