This trailer started it's life as a three wheeler called a roadrunner. It was too small to ride but it made a good trailer. I used air connectors for the quick release connected to a wheel castor minus the wheel. I left the seat, it was easy to cut up a couple baskets to fit around it. I have a BOB trailer I always seem to have overloaded. This should carry more weight. Everything I used was parts I put together from the vast collection of junk in my basement. Real happy how this turned out, rides great. It's just too hot to try out a heavy load yet.