Ideal, Wire Connector, Wire-Nut, Twist-On, Number Of Conductors: 2, 4, Conductor Range: 18 - 12 Awg, Min 2-18 Max 4-14 W/ 1-18, Material: Flame-Retardant Polypropelene, Color: Yellow, Voltage Rating: 600 V, Environmental Conditions: Tough, Ul 94V-2 Flame-Retardant Shell Rated At 105 Deg C (221 F), Model Number: 74B, Flammability Rating: Ul 94V-2