Twist On Wire Connector, Color Red, For Conductor Material Copper, Maximum Operating Temperature 221 Degrees F, Maximum Voltage 600 V, Minimum Wire Combination (2) 18 AWG, Maximum Wire Combination (5) 12 AWG, Contact Material Steel, UL 94 Flammability Rating V-2, Maximum Conductors 6, Standards CE, CSA Certified, UL Listed, Wire Connector Style Wing, Insulation Material Nylon, Maximum Single Wire Size 8 AWG, Minimum Single Wire Size 22 AWG, Overall Height 1.16 in, Overall Width 0.56 in