RV 50A 14-50 extesnion cord 75 Feet 

Parkworld #886177   

https://www.parkworld.us/886177-p302.html 

RV 50A 14-50 extesnion cord 100 Feet 

Parkworld #60110 

http://www.parkworld.us/60110-p393.htm

They will sellable in the end of Febuary.