Hi GB
I ordered Minibore 8mm hose and fittings but they (Gardiners) sent Microbore hose 6mm.
However I had a leaking female EZsnap fitting so today I fitted an 8mm fitting onto the 6mm hose!
Just dip the end of the hose in hot water and ease on.
If you have a local pneumatics supplier you may want to try them - the Rectus 21 / 26 fitting are standard air line fittings and you can go in and show them what you need.
G.