Twist-On Wire Connectors, Color Green, For Conductor Material Copper, Maximum Temperature 221 Degrees F, Maximum Voltage 600 V, Minimum Wire Combination (3) 14 AWG, Maximum Wire Combination (3) 10 AWG, Contact Material Steel, Standards UL Listed, Wire Connector Style Wing, Insulation Material Polypropylene, Maximum Single Wire Size 10 AWG, Minimum Single Wire Size 14 AWG