This AC WORKS brand welder adapter [WDTT650-018] is heavy-duty and flexible. The adapter is 1.5 ft. in length and is a NEMA TT-30P to NEMA 6-50R. The NEMA TT-30P is a 30 Amp, 125-Volt RV/Generator plug. The NEMA 6-50R is a 50 Amp, 250-Volt female welder connector. The cable is a STW 10/3, 600-Volt outdoor jacket cord with a maximum operation power of 3750-Watt. This product is backed by a limited 5-year warranty.