Two-thirds actual size
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TYING SILK: Ordinary sewing silk is too coarse for ordinary fly-tying and it doesn't seem to have the strength. Size 00 is a good size for all flies including bucktails and streamers. For dry flies and small wet flies a gossamer silk size 000 and 0000 is the best to use. Although the strength of this fine silk is much less than the size 00, it has the advantage that more turns can be used, and the heads can be made much smaller.
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