The name says it all. The idea came when we tie a bunch of egg patterns for Steelhead fishing the Salmon River up state New York using the EP Tarantula Hairy Legs Brush. They performed very well but of course some colors where missing and at the same time needed some adjustments. I added a little extra mix of EP Fibers and EP Silky Fibers bled with EP Sparkle Crystal Blue in all the colors which it add a tremendous amount of UV light reflection. The result? A totally different egg pattern and that what these chromes like "DIFFERANTIALITY6 - Brushes per pack.