Dreadnaught Waistguard

The Dreadnaught Waistguard is the Tier 3 plate waist armor for warriors and gives bonuses to strength, stamina, block, and overall defense. It is available through quest items in Naxxramas.

Source
The Dreadnaught Waistguard is a quest reward from the quest Dreadnaught Waistguard (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 Waistguard
 * 8 Wartorn Plate Scrap
 * 1 Arcanite Bar
 * 5 Cured Rugged Hide