Ideal Industries Wire-Nut Wire Connectors - Model 74B

With a fixed, square-wire spring and a positive grip shell, the Wire-Nut is comfortable to twist-on with fingers for a secure connection that will last. The refined wire range makes it the best choice for fine stranded wire applications. The Wire-Nut also features a tough, flame-retardant thermoplastic shell that withstands environmental extremes and is reusable for easy circuit changes and addition.