Twist-On Wire Connectors, Color Red, For Conductor Material Copper, Maximum Operating Temperature 221 Degrees F, Maximum Voltage 600 V, Minimum Wire Combination (2) 14 AWG, Maximum Wire Combination (4) 12 AWG, Contact Finish Zinc, Contact Material Steel, UL 94 Flammability Rating V-2, Maximum Conductors 6, Standards CSA Certified, UL Listed, Wire Connector Style Standard, Fill Material Not Applicable, Insulation Material Polypropylene, Maximum Single Wire Size 6 AWG. This item has been restricted from sale in the following state (s): []