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 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