As pictured.
Approx 195mm long. Holds the butterflies / throttle plates.
Need a new one as my thread is stripped
Thanks
Denver

Bump.
Part #: 10005.243

You can still buy them new mate, http://www.weberperformance.com.au/index.php?cPath=29_231_232&&page=2 
I had to buy two for my webers. not cheap though.
I might have a usable one at home, pm me to remind me tomorrow night when I am home. I think you have to drill the offset hole in the new shaft if you go that way. Pain in the ass!

Cool as Nathan
Found 2 more places you can get em:

http://www.piercemanifolds.com/product_p/pm3721.htm 
http://vwparts.aircooled.net/Weber-44-and-48-IDF-Throttle-Shaft-EACH-10005-24...

Better priced than from Weber
I'll PM you tommro night

Just cut a new thread on the shaft