Hareline Extra Select Marabou.
These Giant size Marabou feathers are my favorite for hackling really large salmon and steelhead flies. These are perfect for what one could call Spey-style flies. I may only use the top 1/3 of the quill for hackling a fly, as the lower portion of the quill can get a little on the thick side to wind effectively. These well-hackled quill sections get put aside for use with my Petitjean Magic Tool for future creative uses. Very long and full. This is definitely a premium product.