Hareline Dubbin Cactus Chenille is reminiscent of Christmas tinsel garland but in a miniature form and a lot more color choices. It is made to be wrapped around the hook shank to form spiky shiny bodies or heads on flies.  It is a quality material, coming in many great colors, with enough in each package for many flies.  
Uses: Wrapping bodies or heads
Comparisons: Similar to polar chenille, but with shorter fibers, this means that the fibers undulate less underwater, but it can add some durability to flies.
Example flies: Euro Jig streamer, Cinder worm, Woolly Bugger