OPL5 15 Amp to 50 Amp RV Power Adapter, 5-15P Male to 14-50R Female Adapter Power Cord Cable 10 Gauge Heavy Duty Electrical Converter with Grip Handle, 125V 1875W-12 inches (15A Male to 50A Female)

RATINGS 1-5 (1=lowest) (5=highest) Affordable compared to competitors - 4 Quality compared to other competitors - 3 Availability compared to competitors- 4 Shipping time - 4 Quality of shipment - 2 (Prongs were bent due to being shipped in a bubble insulated Manila shipping envelope. Had to get a replacement. Should be shipped in a box in my opinion.)

Some dogbone RV adapters have a round bulky male receptacle which will not fit into all electric posts in storage units. By trial and error, I realized that the design of this one (a straight blade/prong plug) allows for making a connection on any type of post. Good quality, too.