Dreadnaught Bracers

The Dreadnaught Bracers are the Tier 3 plate wrist armor for warriors, available through quest items in Naxxramas.

Source
The Dreadnaught Bracers are a quest reward from the quest Dreadnaught Bracers (quest) which starts with Korfax in Light's Hope Chapel in Eastern Plaguelands. To complete the quest, you must turn the following items to Korfax:
 * 1 Desecrated Bracers
 * 6 Wartorn Plate Scrap
 * 1 Arcanite Bar
 * 1 Nexus Crystal