Chances are the female port on the comp regulator is 1/4" BSP, I think. So basically you choose one of the connector standards and go with that for all your bits 'n bobs. I'm not an expert but think the main standards you come across for this sort of thing are Euro and PCL.
Not sure if the kit of tools comes with it, but they're cheap and you can replace the connectors anyway. They look like Euro connectors, you could stick with that if wanted. Ask Abac if in doubt though, they have a UK office.
I stick with PCL connectors because they're cheaper and there's a wider range of different types of connector, but that's just a choice thing.
