I have a small solar panel that I want to connect to a charge controller. If I place the solar panel where it can get direct sunlight, the connector wire will fall next to the charge controller. This three-foot extension solves that problem. What I like? Thick cable 10 AWG. They are also fairly flexible for their thickness. Tinned copper for a good connection. High quality MC4 connectors on both ends. Standard cable with red and black color coding. , but this 3 footer suits my immediate needs. Recommendation If you need the 3ft MC4 Extension I would highly recommend it.