Twist On Wire Connector Color Purple For Conductor Material Aluminum Copper Maximum Operating Temperature 221 Degrees F Maximum Voltage 600 V Minimum Wire Combination (1) 10 AWG Maximum Wire Combination (1) 10 AWG Contact Material Steel UL 94 Flammability Rating V-2 Maximum Conductors 2 Standards CSA Certified UL Listed Wire Connector Style Wing Insulation Material Polypropylene Maximum Single Wire Size 10 AWG Minimum Single Wire Size 18 AWG Overall Height 1.69 in