Adventurer's Bracers

Source
It has a slightly increased chance to drop from Nefarian in Blackwing Lair.

Removed sources
Other raid bosses that previously had a chance to drop this item included Gahz'ranka, Lord Kazzak, Onyxia, and Highlord Kruul.

Appearance
There are several items with similar appearances:
 * Slate gray: Chillhide Bracers, Replica Shadowcraft Bracers
 * Red: Cinderhide Armsplints
 * White: Bleak Howler Armguards, Scaled Bracers of the Gorger
 * Black: Replica Darkmantle Bracers, Aged Leather Bindings
 * Blue: Bracers of Finesse, Blade Dancer's Wristguards, Redeemed Soul Wristguards
 * Green: Mana Infused Wristguards, Ruuan Weald Wristguards, Umberhowl's Collar