Frayed Abomination Stitching

Frayed Abomination Stitchings are magically enhanced thread used to hold together Abominations. Prior to the Cataclysm (see Patch 4.0.3a), they were used as an ingredient in numerous quests for rare and valuable magic items.

Source
This item drops from abomination mobs in Stratholme.

As a quest objective
This item is an objective for the following quests:
 * Cap of the Scarlet Savant (quest)
 * Leggings of Arcana (quest)
 * Breastplate of Bloodthirst (quest)
 * Breastplate of the Chromatic Flight (quest)
 * The Ultimate Deception
 * Libram of Protection (quest)