I'm guessing that all the air tools that Lidl stores sell for example are fitted with the Euro type connector? Which don't fit into the connector that comes with a Clarke machine but I did find an adapter/converter piece to make it all work.
I got a bit confused myself over air fittings a week or so ago and folk here were a great help. I spent a while looking at PCL's website and came across this PDF that suggests that PCL XF and Euro are not interchangeable... I'll happily admit that I have no practical experience of whether they do actually work in reality!
What totally confuses things is that people call a PCL XF a Euro and that is where the issue lies. I can't remember which way it is but I think you can get a PCL19 into a an XF coupling, it doesn't work but can cause a bit of tension when you try and get it out
Decent quality PCL probes(the bit fits on the tool) cost £1.70 in Screwfix so it's really not worth risk.You are your own worst enemy if you are using the wrong fittings.
I think most of the stuff from Aldi/Lidl have PCL XF type fittings.
It is worth having some conversion pieces, I made conversion both ways while I was converting to PCL XF, I had so many to do I couldn't do them all in one sitting which meant I could have ended up with tools that I need that didn't fit the hoses I had.
What also confuses things is the whole male/female thing, that bit applies to the thread that fits the tool or hose. with regards to the connection the "male" part is called a probe and "female" part is a coupling.
If you buy probes always buy a couple more than you need because it's guartanteed you need one for a tool you buy at car boot.