Shop Nilight 30Amp L14-30P L14-30R Male Female Locking Plug and Connector Generator Twist Lock Plug Adapter 125/250V ETL Listed Industrial Grade Heavy Duty for RV Camper Caravan Trailer in high quality, support 2 years warranty. Constructed with heavy duty ABS material housing, it is resistant to high temperatures and flame. No oxidation for the Nickel coated copper pole on the plug, made of premium copper and durable plastic to avoid the damage of UV degradation and chemicals.