same here keep it simple. its a workhorse not a showpiece.If it's for your Ebay blast pot use one of these
http://www.blastitclean.co.uk/page9.html (3mm recommended)
Throw away the fancy fittings and fasten the nozzle straight into the end of the blast hose with a Jubilee clip.
Yes, I was about to contact them, their current price for Silicon Carbide was 1/2 what I was quoted last year from another supplier; when I was looking into things.You could contact Hodge Clemco - they do a complete range of industrial nozzles.
AFAIK everyone and his dog use the nozzles in my link above, they work perfectly well.
OK cheers.keep it simple and cheap quality as
same here keep it simple. its a workhorse not a showpiece.