These are Hot Wheels compatible tracks that were made for something like sizzlers, but not by hot. Wheels, I can't remember what they were called, they're really stout, they don't move when the cars go through, even if it's heavy cars. We use 2. If you want to go ninety degrees, either way if you want to go a hundred and eighty degrees, you put all four of them in no broken parts, very clean
