I bought a set of these for my sugga.
https://www.ebay.de/itm/Stahlflex-Bremsleitung-VOLVO-TP-21-Sugga-Radiobil-01-53-12-58-/232581700054?nma=true&si=5kbG6BooUY1lbXCXx20vuz1KUhs%3D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557