Eyelet Poles
Eyelet curtains run directly on the pole, with no rings, so the pole itself becomes part of the operating mechanism. The diameter has to suit the eyelet, and the surface needs to let the curtain glide.
Finials matter more here than on a ringed pole. During fitting, the eyelets have to pass over or around the end components, so check how the finials attach before you commit.
Eyelets fall in even, rolling folds and read as cleaner than a tailored heading. The curtain headings guide compares the options.