Thermoplastic. Has built-in clamp tight strain relief. Well suited for appliances that require frequent plugging and unplugging. For use with 20-, 18-, and 16-gauge flat SPT cord. May also be used on 2-wire round cord up to 1/4" diameter (No. 18 SV and SVT). 15A/125V. UL (Underwriter's Laboratories) listed. NEMA 1-15P. 1 per blister pack. Use with Model No. 102 connectors.