Abstract: A tubing assembly for conveying fluid under pressure such as from a source of air pressure in a vehicle to an airbrake system of the vehicle. The assembly includes a flexible first and second tubing member, each having an outer surface and extending axially from a forward distal end to a rearward distal end. The first tubing member is wound intermediate the forward and the rearward distal end thereof radially about a generally cylindrical surface to define a first expandable, self-retracting coil portion having a plurality of first turns. The second tubing member, in turn, is wound intermediate the forward and the rearward distal end thereof radially about the cylindrical space to define a second expandable, self-retracting coil portion disposed within the curve of the cylindrical surface space as extending parallel to the first coil portion and as having a plurality of second turns.