Twist On Wire Connector, Color Red, For Conductor Material Copper, Maximum Operating Temperature 221 Degrees F, Maximum Voltage 600 V, Minimum Wire Combination (6) 18 AWG, Maximum Wire Combination (3) 10 AWG, Contact Material Steel, Standards UL Listed, Insulation Material Polypropylene, Maximum Single Wire Size 8 AWG, Minimum Single Wire Size 18 AWG, Special Features Accommodates a Wire Range of 1,5 - 2,5 Mm2 Solid or Stranded, Robust Spring Design for High Performance Holding Power