Got a question concerning hope disc brakes 😕

I have a couple of sets of the old C2 hydraulic brakes and they have I believe a 6mm diameter hose.
I've looked about a bit but can only find hose in 5 mm diameter
Can I swop it for the 5mm without any problems?
[the fittings appear to be the same and screw into the banjo and nipple holes without issue]
Im trying to renovate a few sets back into life and have plenty of spares ,pistons,seals kits etc to keep them going,its just a couple of hoses need replacing
Any disc techy heads experience in this? 😀

I believe you can but you need new end fittings in 5mm

Ring Hope – they're very helpful.

6mm no longer available as you've found, you will need new fittings as even though they'll fit internally, they're designed to fit a different external diameter(oh, and there are two different sizes of shroud, depending on whether you have braided hose or not.).