I told you wrong. It's not a bolt head, just a bolt with a pin thru it. One of the speed handles that came with your trailer is slotted and fits it. I think it's probably the same one you use for the slide.
Lolyd,OH OH,It might not fit now,lol I mared it up a bit trying to get it off with a wench,When i go back to the place where its stored i will try the speed handle.I should of know how it was shaped that you needed a special tool,When i was trying to get it off i new i shouldn't be doing it that waybut i did it anyways,LOL,Thanks