IDEAL® WIRE-NUT® 30-059 74B® High Temperature Wire Connector, Twist-On Shell Style, Fixed/Square Wire Spring, 22 to 12 AWG Wire, Solid/Stranded Copper Wire, Thermoplastic Polyester

With a fixed, square-wire spring and a positive grip shell, the 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.