Unused Window Lock Set of 2 These are fixed window security locks. You can lock and unlock them by turning the knob, allowing you to open and close the window. 28-42mm Black, set of 2 I'm selling these because I haven't had a chance to use them. They are new and unused, but please take a look at the pictures as they have been stored at home. Please purchase if you understand this. Shipping: Included, anonymous shipping, same-day shipping Packaging: Simple packaging Window Lock Stop Security Opening prevention Mischief prevention Children Key