Spirit River Fly Tying Kit StimlatorsEach kit comes with everything the tier needs except the thread to tye 24 flies in 3 size ranges. The patterns are some of the best in the country and each kit has a comprehensive step by step instruction leaflet. Spirit River Inc use Whiting for the hackle. Note that Spirit River Inc does substitute a material or 2 when needed like their Airflow Wings instead of dun hen saddle.A video for this kit can be found by clicking here. Even a rookie tier can give a class using the videos.