while the ½-inch copper caps look great on a curtain rod. It's a loose fit, but in a pinch you can probably make ¾-inch copper end caps work on ½-inch EMT. The inner diameter of the caps is ...

A good curtain rod will be versatile, both in terms of function and aesthetics: Ideally, you’ll change them out less often than your curtains, so you want them to work with a range of styles.