Northern Game Mylar Piping is a great material to produce a scaled effect on fly bodies.
 
Made from braided tinsel strands, this mylar piping is great to produce scale effect bodies on trout, salmon, predator and saltwater patterns.  The end strands can also be 'teased' out to form a tail.
 
Available in gold or silver in 3 sizes.  Approximately 1 metre per pack
 
Small approximately 2mm diameter 
Medium approximately 4mm diameter
Large approximately 5mm diameter