Twist On Wire Connector, Color Red/Yellow, For Conductor Material Copper, Maximum Operating Temperature 221 Degrees F, Maximum Voltage 600 V, Minimum Wire Combination (5) 12 AWG, Maximum Wire Combination (2) 8 AWG, UL 94 Flammability Rating V-2, Standards CSA Certified, UL Listed, Wire Connector Style Wing, Insulation Material Plastic, Maximum Single Wire Size 8 AWG, Minimum Single Wire Size 8 AWG, Overall Height 0.76 in, Overall Width 0.76 in, RoHS Compliant Yes