https://www.wowhead.com/wotlk/cn/guides/blood-death-knight-tank-best-in-slot-gear-pre-raid
Pre-Raid BiS Gear (+ Other Options) Armor Head:Faceguard of Determination (50 Badges of Justice) or Felsteel Helm Neck:Necklace of the Juggernaut (25 Badges of Justice) or Strength of the UntamedNecklace of the Juggernaut does provide more mitigation and
https://www.wowhead.com/wotlk/guides/blood-death-knight-tank-best-in-slot-gear-pre-raid