Amazon.com: Kohree 30 Amp to 50 Amp RV Plug Adapter 18", Heavy Duty RV Dogbone Electrical Adapter 30A Male to 50A Female Power Cord with Grip Handle, 125V/3750W : Automotive
AC WORKS Adapter Kit for 50A RVs 50-Amp 4-wire To 3-wire Grounding Single To Single Yellow Basic Compact Adapter in the Adapters & Splitters department at Lowes.com
Amp-50 – Gilderfluke & Co
AudioSource AMP 50 Stereo Power Amplifier AMP 50 B&H Photo Video