80-Pack Curtain Track Runners with Smooth Nylon Glider Wheels - Perfect for Sliding Drapes, Room Dividers & Closet Doors

First, I will say they perform exactly as they're supposed to. I bought these for a curtain project in my RV. I already had the track, but needed more of these. These were the only ones I could find that would work on that track. They are really hard to attach because you need to open it with a needle nose pliers to get over the edge of the track, then squeeze it closed again. You have to do this while keeping the little white rollers in place. They fall off very easily. It was an arduous process to say the least. Also, these come from England, so the shipping time is a little longer. It didn't take as long as they said tho. I couldn't find them any other place, so I'm at least happy I was able to get them & complete my project. It would have been a lot easier if they had a spring or something to get them on the track, but unfortunately that's not the way they, or the existing ones I had, were made. Be prepared to get frustrated & chase little white rollers around.