Part of the Black Dragon Mail set:

The set gives these bonuses as more pieces are worn: 2: Improves your chance to hit by 1%. 3: Improves your chance to get a critical strike with melee attacks by 2%. Set Details | All Sets

Taught by:

Name	Source	Level
Pattern: Black Dragonscale Boots	Vendor	60

Created with Leatherworking:

Skill	Recipe	Components	Slot	Source
300	Black Dragonscale Boots	x6 x30 x4 x3 x2 6x Enchanted Leather 30x Black Dragonscale 4x Fiery Core 3x Lava Core 2x Rune Thread	Feet	Recipe, Vendor

Disenchants into

Name	Value	Drop%
Nexus Crystal	1 Copper	100.0%