you can make them no problem standard brake pipe and fittings , maybe best to get someone to show you first though or at least practice a few before you put them on the car
i prefer kunifer pipe rather than copper its harder but does a better job and is more likely to come off again in the future if reqd, i think brake pipe is 3/16 or 4mm
have a look at clarik.co.uk or go to your local factors