Twist On Wire Connector, Color Blue, For Conductor Material Copper, Maximum Operating Temperature 221 Degrees F, Maximum Voltage 300 V, Minimum Wire Combination (2) 22 AWG, Maximum Wire Combination (3) 16 AWG, Contact Material Steel, UL 94 Flammability Rating V-2, Maximum Conductors 5, Standards CE, CSA Certified, UL Listed, Wire Connector Style Standard, Insulation Material , Maximum Single Wire Size 14 AWG, Minimum Single Wire Size 22 AWG, Overall Height 0.7 in