As an industrial electrician, I have tested numerous wiring and connecting systems. As a result of my TESTS, I determined that this product is worth its weight in gold! The system is both dependable and durable .The square camper electric system saves time, effort and money. It is a great asset in the industrial and scientific fields. The only con could possibly be that it may not be suitable for extremely large operations. Overall, i highly recommend this product for camper electrical needs..