NEMA 10-30P 250V molded 3-prong male plug, right angle, for 30 AMP, 250 Volt. NEMA L14-30R molded Locking 4-prong female receptacle, for 30 AMP, 250 Volt. Molded plug and connector, more safe than assembly type. Molded with electroplate copper terminal in order to avoid surface oxidation effectively. Heavy-duty 100% copper wire conductor inside, used 10 AWG stranded copper inner wire, support max 30 Amp loading. Length: 18 inches (1.5 Feet) Color:Black