• Chestplate of Vicious Potency
• Item Level 219Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Plate
• Chest
• 2322 Armor
• +113 Strength
  +120 Stamina
• Blue Socket
• Socket Bonus: +4 Critical Strike Rating
• Durability 165 / 165
• Requires Level 80
• Equip: Improves haste rating by 81.
  Equip: Increases your armor penetration rating by 45.
• 
• Sell Price: 14 74 49

Source

This item drops from the XT-002 Deconstructor in the 10-man version of Ulduar.

Patch changes

• Patch 3.1.0 (14-Apr-2009): Added. 
  

External links

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