Gloves of the Lost Protector

Gauntlets of the Lost Protector is a tier 7 armor token. It can be exchanged in Dalaran for the following items:
 * Heroes' Dreadnaught Gauntlets
 * Heroes' Dreadnaught Handguards
 * Heroes' Cryptstalker Handguards
 * Heroes' Earthshatter Gloves
 * Heroes' Earthshatter Grips
 * Heroes' Earthshatter Handguards

Source
This item drops from Sartharion in the 10-man version of the Obsidian Sanctum.

This item is also sold by the following vendors for :
 * in Dalaran
 * in Dalaran