From a 2001 ST4

Fits ST4 916 but I think it may be the same on some for valve desmo engines

33mm head 107mm long with 7mm shaft marked T 80602/2

in good used condition 

I have been breaking Italian bikes for some time now so you will

find a lot more parts for Ducati 749,999 and 748, 916, 996 series bikes

in my  Ebay Shop .