On VWvortex, a member put out a call to test some nozzles with his flow system he built. I had nozzles sitting around not doing anything, so I sent him all of the nozzles I had. This is the thread where he posted his results. I must state that I was in no way compensated for the test, I sent the nozzles at my cost, so I have nothing in the game but recently used nozzles, half with 4mm hose left attached, and a $20 bill on my credit card.
http://forums.vwvortex.com/showthrea...1#post85495091
Understand that most if not all are used nozzles, and as the thread says some of them are likely very old.