High Quality Material: The wire nut connectors are made of flame retardant material that prevents wires from coming into contact with other wires or exposed metal surfaces, resulting in dangerous faults or short circuits. Easy to Use: Securely connect wires without soldering or electrical tape, the spring-loaded insert ensures a stable connection when working on wiring projects, reusable, safe and reliable. Easy to Store: Our assortment of twist-on wire connectors packed in a divided storage box to keep different wire connectors separately. Convenient for storage and use. Widely Used: The twist on electrical connectors are ideal for home theater, marine wiring projects, household wiring projects, speaker wire, stereo wiring, automotive, household wiring projects, commercial or residential applications, etc. Five Colors: Includes an assortment of five connectors in colors, gray, blue, orange, yellow, and red, in various sizes, suitable for most electrical wiring projects and applications, a great addition to your electrical connector kit. Package Quantity: 158 Pieces