Bought Golden Olive 14-16 and Grizzly Lt Blue Dun 12-14. There are about 30+ or so usable feathers in each pack, each about 2.5 - 3" long. Not much difference between the 14/16 and 12/14 sizes. This hackle is probably best for wooly buggers and the like for short body hackle. In a pinch you can use it for parachute dry fly hackle but only the top 1.5" is usable and the barbs sparse so you may need to use 2 feathers.