Ultrathread UTC 70 Denier | OFF Fly Shop
$2.99 X
Ultra Thread is a strong, flat, smooth, lightly waxed, slow building nylon thread. UTC 70 is great thread for trout nymphs and dry flies in the 10 to 28 size. The breaking strength of this thread is about one pound. This thread helps to prevent bulky thread build when dividing wings and tapering heads. 

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