I will try it tomorrow on a very small job and see how it goes, if it's not bobbing about and cleaning as I would like I will look to take this up with the supplier. I'm concerned about the jet that's protruding more than the other and the fact it has some sort of adhesive around the thread although this could be the new PTFE that a plumbing merchant told me about.
Thanks for the info chaps and if ben reads this I can't see the 12" replacement bar on your site, just in case it breaks if I need to replace the jets.
H9 is the only marking on the jets dose this indicate anything?