Usage Tips:What you will receive: package comes with 4 roman shade cord locks, enough quantity to meet your daily need, fitting for blinds, roman shades and similar window treatments; They are applied to easily open and close the shade by gripping and releasing the cords Sturdy and reliable: the roman shade window blind lock is made of iron and plastic material, so they are durable, sturdy, not easy to break or deform that can serve you for a long time, bringing convenience to your life Easy installation: the Austrian shade cord lock can be installed without any effort; If you're using it for the first time, you can watch instructional videos in advance, which will make your project really easy without frustration Work nicely: these cord lock work well for roman shades that you can raise and lower your roman shade just like a blind; Mounting them to the top brace, then thread the cords through, they will work nicely to make your shade flexibly adjustable Warm tips: Austrian shade window blind lock comes in several sizes depending on how many cords will be strung through, our three cord lock works for one, two or three cords; And please check the dimensions on the picture before ordering to make sure that it matches to your blinds