Stepped cable ferrules for late 90s steel frame

[CountrySickness]

I'm rebuilding my Paul donohue low pro TT frame (650c front wheel ) and its mostly there but I can't seem to source the correct sized stepped ferrules for brake and gear cable stops.  I have campag and jagwire ones in my spares boxes but both are too wide for the frame, any ideas what the sizing could be/possible sources? A google search doesn't help a lot.

[slope]

Perhaps?

https://www.sjscycles.co.uk/search/?term=stepped%20ferules

[CountrySickness]

Thanks, i was trying to avoid SJS, but their website does bring me to the conclusion that my TT frame has campag cable ends and my spare campag ferrule isnt a campag

[rogerzilla]

"Diver's helmet" cable stop?  Yes, only Campag pattern ferrules will fit.  They have smaller small ends than usual.