This is a heavy duty welder extension cord RV adapter. The cord measures 12 inches (30 cm) long and is ETL approved. This RV adapter has been designed tough and made from the highest quality materials. The compact design is easy to use and allows for easy removal. This plug is corrosion resistant. 3 prong cord with a 3 prong socket. STW 12/3 15 A Male to 50 A Female. 5 - 15 P to 6 - 50 R. ETL approved. Heavy duty power adapter cord. Color: Black.