Bunnell White Adjustable Gliders (Set of 100)

Looked like my old Swish curtain hooks, but didn't glide on the track at all.

i bought these and thought they might not be great but the price was good. they work just as well as the ones ive had in the past that were twice the price. they work perfectly even on my old slider curtain rail

It does the job, but not ideal with pole rings.