First off here's two screw jacks to look at. The green one with the oblong base is the shape and configuration which is commonly (but not universally!) regarded as the "correct" one for WW2 jeeps. The black one with the square base is supposed to be a post war civilian type.
They both have a round recess to fit the lug wrench and both lift the jeep nicely. The post war black one is a little taller when fully extended.
Opinions change on what's deemed correct and incorrect for the jeep, so I might find that one day they're both are worth a fortune 
I also gave my original (hoping no-one can argue with that!) hand crank a nice new coat of OD, great painting weather! Looks good. Toolkit now getting close to being "complete", will post an update when latest item arrives from USA.
More photos at:
http://www.surfacezero.com/g503/showgallery.php?cat=500&ppuser=498
For all your Jeep and Dodge needs: