A unique vibration proof and reusable wire connector system that delivers a superior connection to crimping. Simple to use, only wire stripping required. Wire ends are locked between opposing cone shapes when hand tightened, resulting in a positive, strong connection. Really strong. Impossible to pull apart, but they easily unscrew for roadside service or re-use. There are no metal parts and the internal electrical resistance is less than with crimp connectors. Patented and design protected seven ways to Sunday, naturally. Color coded bodies are super tough Nylon 66 resin. These are the ultimate reusable weather tight connectors, and a great way to wire electrical accessories.