3 Prong Dryer Plug - not cord?

Ok maybe I missed something. I wired up a 50 amp spa panel adding a 4 prong outlet for my controller. I then ran 10/3 cable to the panel from the room with my dryer which has a 3 prong outlet. I thought I could just buy a 3 prong plug to add to the other end of the cable and plug it in but all I can find with the right configuration of 3 prongs are dryer cords with the plug permanently attached.

There are lots of plugs out there but none with the right prongs - 2 at an angle and the third "L" shaped. Do I have to buy a long cord?

Thanks for any info...

Sounds look like you are looking for a NEMA 10-30 plug. Plenty of options on the web.

http://www.amazon.com/s/?ie=UTF8&ke...vptwo=&hvqmt=e&hvdev=c&ref=pd_sl_5vvjrt7t11_e

Thanks -- I totally missed it - yes exactly what I need!