Pros: • Easy to use • Packaging consists of all 3 types of jumpers • Shipping is fast, good packaging • 4 mockup projects done with it Cons: • CANNOT recreate more than one project at a time - it would be nice to have another dazzling one of each type, even if it would cost a little extra modification • A few parts broke / or the metal leg fell out, not too often a big problem • Some, if you pull a little too tight they will tip over the breadboard socket holes. Just pay attention to their length before placing an order and you will be fine. In general, they are acceptable and balanced in good and bad qualities. Would I buy them again? maybe a slightly larger pack with more male to male connectors if this was my first order for them but I would probably only buy the quantity I want to stock.