This is our Regular Grade Silver Fox... We do not dye the Arctic Marbles Black...this is the complimentary product for black hair. Salmon, sea trout and steelhead flies. Tube flies dressed either traditional, Frodin, Shumakov, or templedog style up to 80mm wing or tail length. Any larger hairwing single, double and treble or the smaller hooks / tubes that require a longer wing. First class fox tail long and very mobile. Ideal for the Scandinavian style of fly dressing. Hair length: 80 mm.