This AC WORKS® brand protective adapter [S1450CB620] is a heavy-duty household adapter cable. This 1-foot cord is a NEMA 14-50P to NEMA 6-15/20R. The NEMA 14-50P is a 50 Amp, 4-prong RV/Generator/Range male plug. The NEMA 6-15/20R is a 15/20 Amp, T-blade, 250 Volt female connector. The cable is an STW, 10/3, anti-cold weather cable staying flexible in extreme temperatures. The cord is super durable and typically used with residential applications, generators, construction, and industrial equipment. Included with your purchase is a 5-year limited warranty.