What are these called and where can I buy them?

[PacificState]

Bane of my life (crappy curtain rails, don’t ask…)

Dunelm

https://www.amazon.co.uk/HDmirrorR-Curtain-Track-Glide-Glider/dp/B007IX1JYS

They are curtain track gliders.

Thank you - what are they called?

Aha, thanks @Spoodles

No worries. In future if you find yourself in this situation you can Google lens a picture and it will help you identify things. Just click and hold on your image and search with Google lens. You can also do it in most photos galleries on phones. ☺️

Thank you!