This a soft clear tubing (frosted, not see-through) that is easily configured to the space you have. It's able to bend at a fairly sharp angle without collapsing.  

This is hollow and the open ends make it easy to attach to objects with a placement of a pin or stud thet may already exist.
For fittings, see Hex Fittings or Size I Ferrules sized at .080 for this clear line.

This soft line equals the following equivalent 1:1 size at each scale.
1/25 scale = 2"
1/16 scale = 1 1/4"
1/12 scale = 15/16"
1/8 scale  =  5/8"

This makes a great 'puke' line for those big FC or TF engines.

Each package contains one coil of .078" x 12" clear tubing.