Wire Connector Body Material Aluminum Alloy Color Black For Conductor Material Aluminum Copper For Stranded Copper Wire Size - Minimum 3/0 AWG For Stranded Copper Wire Size - Maximum 6 AWG Head Style Hex Hex Size 1/4 in Insulation Material Plastisol Maximum Operating Temperature 194 Degrees F Maximum Voltage 600 V Mounting Hole Size Not Applicable Number of Ports 2 RoHS Compliant Yes Standards cULus Listed Minimum Operating Temperature -45 Degrees F