UTC Ultra Thread 70 Denier is a strong, flat, smooth, lightly waxed, slow building nylon thread. UTC 70 is great thread for trout nymphs and dry flies
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This is for one spool of Purple 70 denier U.T.C fly tying thread. Silky smooth,extra strong, lightly waxed thread that lays flat. 100 yard spool .
Purple U.T.C Ultra Thread 70 Denier 100 YD Spool. Fly Tying/ Nymphs Streamers
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WAPSI UTC 70 Denier Fly Tying Thread