• Relentless Gladiator's Mail Leggings
• Item Level 251Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Mail
• Legs
• 1237 Armor
• +164 Stamina
  +73 Intellect
• Red Socket
  Blue Socket
• Socket Bonus: +6 Agility
• Durability 105 / 105
• Classes: Shaman
• Requires Level 80
• Requires personal and team arena rating of 1550
• Equip: Increases spell power by 149.
  Equip: Improves critical strike rating by 80.
  Equip: Improves your resilience rating by 96.
• 
• Relentless Gladiator's Thunderfist (5 pieces)
• [Relentless Gladiator's Mail Armor]
  [Relentless Gladiator's Mail Gauntlets]
  [Relentless Gladiator's Mail Helm]
  [Relentless Gladiator's Mail Leggings]
  [Relentless Gladiator's Mail Spaulders]
• (2) Set: +50 Resilience Rating.
  (4) Set: Reduces the cooldown of your Grounding Totem ability by 1.5 sec.

Source

This item drops from Koralon the Flame Watcher in the 25-man version and Toravon the Ice Watcher in the 10-man version of Vault of Archavon.

This item is also sold by the following vendors for 13,200 770 :

•  Big Zokk Torquewrench <Arena Vendor> in Netherstorm
•  Evee Copperspring <Arena Vendor> in Gadgetzan
•  Nargle Lashcord <Arena Vendor> in Dalaran

This item is also sold by the following vendors for 95 :

•  Arcanist Uovril <Emblem of Frost Quartermaster> in Alliance
•  Magister Arlan <Emblem of Frost Quartermaster> in Dalaran
•  Goodman the "Closer" <Emblem of Frost Quartermaster> in Icecrown Citadel

Patch changes

• Patch 3.2.0 (04-Aug-2009): Added. 
  

External links

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