Wire Connector Body Material Aluminum Alloy Color Black Finish Insulated For Conductor Material Aluminum Copper For Stranded Copper Wire Size - Minimum 14 AWG For Stranded Copper Wire Size - Maximum 2/0 AWG Head Style Hex Hex Size 3/16 in Insulation Material Santoprene Maximum Operating Temperature 194 Degrees F Maximum Voltage 600 V Number of Ports 4 UL 94 Flammability Rating V-1 RoHS Compliant Yes Standards UL Listed 486DB Wire Connector ANSI C119.1