... Metal,aluminum-alloy, zinc-alloy,PlasticWe can make all kinds of curtain rods with sticker, Plastic curtain rails, curtain tracks, ... glass.4. Different surface finish Available surface finish: Any color of electroplated, such as antique brass, antique copper, satin nickel, ... which are suit to competitive markets. We offer products speically for Arabic people and kids, too. cap for 28mm aluminum pipe