Twist On Wire Connector Color Red/Tan For Conductor Material Copper Maximum Operating Temperature 221 Degrees F Maximum Voltage 600 V Minimum Wire Combination (2) 18 AWG Maximum Wire Combination (4) 10 AWG Contact Material Steel UL 94 Flammability Rating V-2 Maximum Conductors 6 Standards CSA Certified UL Listed Wire Connector Style Wing Insulation Material Polypropylene with TPE Overmold Maximum Single Wire Size 8 AWG Minimum Single Wire Size 22 AWG Overall Height 1.25 in