Twist-On Wire Connectors, Color Gray/Red, For Conductor Material Copper, Maximum Temperature 221 Degrees F, Maximum Voltage 600 V, Minimum Wire Combination (3) 18 AWG, Maximum Wire Combination (2) 10 AWG with (1) 14 AWG, Contact Finish Zinc, Contact Material Steel, UL 94 Flammability Rating V-2, Maximum Conductors 6, Standards CE, CSA Certified, UL Listed, Wire Connector Style Wing, Fill Material Silicone, Insulation Material Thermoplastic Polyester, Maximum Single Wire Size 12 AWG. This item has been restricted from sale in the following state (s): []