IDEAL® WIRE-NUT® 30-074 74B Flame-Retardant Twist-On Wire Connector, Fixed/Square Wire Spring, 18 to 12 AWG Wire, Aluminum/Copper Wire, Polypropylene/Steel

Wire-Nut® is perfect 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.