IDEAL Twist On Wire Connector,600 V,PK25

Twist On Wire Connector, Color Gray, For Conductor Material Copper, Maximum Operating Temperature 221 Degrees F, Maximum Voltage 600 V, Minimum Wire Combination (1) 20 AWG with (1) 18 AWG, Maximum Wire Combination (1) 10 AWG with (2) 12 AWG, Contact Material Steel, UL 94 Flammability Rating V-2, Maximum Conductors 4, Standards CE, CSA Certified, UL Listed, Wire Connector Style Standard, Compatible with Product Type Underground, Fill Material Silicone, Insulation Material Thermoplastic Polyester