Problem Solved
I purchased these because a long pasenger car I had bought wouldn't work on my smaller curves. However, these completely fixed the problem. They fit on the outside of my smaller curves, hobbylinc #BAC44503, which gives a realistic double track look. The spacing between the two types of curves is about 6 inches apart and fits perfectly. I like that the item was a real problem solver. I have nothing negative to say about these.
