Comes in a see thru plastic case making it easy to identify and store Wire connectors include a cone shaped spring insert for making solid, stable connections to grab the wires firmly. Great for home, speaker, automotive, and residential wiring. High quality waterproof wire connectors easy twist-on wire nuts to make secure electrical wire connections. Cone shaped spring holds the wires firmly together;tight wire spring makes quick and secure connections., Weight: 0.55556490024 pounds, Manufacturer: Reeatel