I ordered these long straights for my son's new train set. I had bought him new Brio trains for Christmas, but most of the track pieces I purchased used off a neighbor, so they were a mix of various different brands (Melissa & Doug, Thomas, and one other I don't know). We needed a few more straights, so I went with these from Brio. At first I was disappointed by the price for only 4 pieces. But I have to say, the quality of these is well above and beyond the other pieces we have. They fit together perfectly and are easy to attach and detach. The Brio trains roll easily along these tracks--not so with some of the others.