Parts such as the Water Pipe: Nut,flange,6mm, Pipe Comp.,r.wate, Pipe Comp.,l.wate, Bolt,flange,6x40 are included in the Cn250 Helix 1994 (r) Usa Water Pipe parts fiche.
With four applications this Nut,flange,6mm is the most specified part.
The most expensive part in this assembly is the Pipe Comp.,r.wate.