Shop Nilight 30 Amp to 30 Amp RV Power Adapter 4 Prong Locking Plug 125 Volt Heavy Duty Converter L14-30P to TT-30R 30A Male Plug to 30A Female Receptacle for RV Camper Caravan Generator, support 2 Years Warranty in high quality. Constructed with flame retardant and heat-resistant PVC material housing, makes the whole adapter cord sturdy, pressure-proof and durable.