Hand Crank for Spare Tire Jack

[Sundown94]

I know, I know, I used the worst possible description for what I'm looking for. So if you look at item number 7 in the picture (which is the jack itself) and look at the top of the jack, you will see that there is a square "nut" that an extension/handle connects to so that you can turn the screw to raise or lower the jack. This extension (or handle) is what I am missing. In the picture, the extension/handle might be item #'s 15 or 16. In fact, I now see from the picture that I am actually missing everything in box #13 (which includes items 14-19).