In the Appearances collection, Black Blood Legplates is listed as Boss Drop. Appearance ID: 20127. 14 other items wear the same appearance; 10 of them are listed here.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Black Blood Legplates Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Black Blood Legplates suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Black Blood Legplates Fits
Other Items Named Black Blood Legplates
4 other items in the current build are also called Black Blood Legplates. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Blizzard numbers items as they are created, so the named items next to ID 96497 (96492 to 96502) were usually added in the same batch as Black Blood Legplates: the same quest line, zone, vendor or reward set.