1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information;
2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.
3.It is made of Zinc Alloy,and it is durable and has long lifetime.
4.Suitable for aluminum door and windows.
5.Available in both directions through removing the behind screws.
6.Great window door locking, opening and closing handle lock for you to use.