• Belt of the Fallen Brood
• Heroic
• Item Level 379Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Leather
• Waist
• 1028 Armor
• +266 Agility
  +458 Stamina
• Blue Socket
  Red Socket
• Socket Bonus: +20 Agility
• Durability 55 / 55
• Requires Level 85
• Equip: Increases critical strike rating by 204.
  Equip: Increases mastery rating by 164.
• 
• Sell Price: 8 90 70

Source

This item is looted from the Cache of the Broodmother when Sinestra is defeated in the Bastion of Twilight raid instance on heroic mode.

Patches and hotfixes

• Patch 4.0.3a (2010-11-23): Added. 
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB