• Razorscale Shoulderguards
• Item Level 226Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Plate
• Shoulder
• 1761 Armor
• +64 Stamina
  +65 Intellect
• Durability 100 / 100
• Requires Level 80
• Equip: Increases spell power by 99.
  Equip: Improves haste rating by 60.
  Equip: Increases your mana regen by 20.
• 
• Sell Price: 12 5 81

Source

This item drops from Razorscale in the 25-man version of Ulduar.

Patch changes

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

External links

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