Which Tow Bar Is This?

Brady There are 3 types of tow bars. Stock Ercoupe ,The other are for double support fork nose gears . 1) is a Piper tri-pacer used on Coupes with some Mods to make it work . It has a sharper turn down to the axel with a square block on top.. The 2nd one was made for Coupes it is most rounded and one piece casting See net pictures of Coupes You will see them all .

My 415C has the heavy duty nose gear such as this one: HD Nose Gear Pictured with Tow Bar  Does anyone know which tow bar this is?  The "Ercoupe" tow bar I ordered from Aircraft Spruce does not fit my plane. Thanks, again!  
(sorry for all the "two bar", dang auto correct)