Packing: 2pcs Material: metal Color: silver Sturdy and durable, not easy to bend, smooth surface, no scratches, not easy to break or deform, can be used for a long time Reliable, sturdy, durable, heavy weight, safe Easy to install: mount them on the top bracket, lightweight and sturdy, the installation process is quick and simple, you can easily complete the replacement or repair work The roller shade cord locking mechanism is responsible for the raising and lowering of the shades, utilizing lift cords and ropes to control the height of the shades. Shades must use approximately 2-inch by 2-1/4-inch header rails Venetian cord locks for 2-inch horizontal wood or faux wood blinds easily open and close blinds by clamping and unclamping the cords Caution. Before ordering, please check the size and shape in the picture and compare it with your existing shutter locks!