I was cleaning up my messy workbench when I remembered I had these - I had machined my own air assist nozzles some time ago and I had enough spare material to make a few more while I was at it.
I machined them according to this drawing:
http://www.buildlog.net/cnc_laser/drawings/nozzle_rev_2.pdfI'm including a 1/8" brass pipe fitting and three #4-40 screws. I'd like $25+ shipping each. I only have three, and I'm not making any kind of profit on these (I machined them by hand.)
PM me for my PayPal