This AC WORKS brand adapter S10501030-018 is very durable with a flexible design. It is a NEMA 10-50P to a NEMA 10-30R. The NEMA 10-50P is a 50 Amp, 250 Volt, 3-prong male plug. The NEMA 10-30R is a 30 Amp, 250 Volt, 3-prong dryer outlet female connection. The product is heavy-duty STW 10/3 30-Amp Copper Wire with 600-Volt Jacket.