Wowpedia

Much like [Green Lens] and [Wild Leather Vest], this item is created with a random enchantment.

Source

This item is made by Engineers, requiring skill of 400 or greater, and using a [Blacksmith Hammer] tool.

World of Warcraft rare items
Mail armor items
Head items
2 more
World of Warcraft mail head items
World of Warcraft engineering crafted items

Materials required:

Item Suffix	Stats Bonus	odds
of Agility	+101 Agility	12.5%
of Power	+202 Attack Power	13.2%
of Spell Power	+118 Spell Power	10.1%
of the Bandit	+53 Agility, +79 Stamina, +106 Attack Power	13.0%
of the Hunt	+146 Attack Power, +41 Agility, +32 Intellect	13.1%
of the Monkey	+67 Agility, +101 Stamina	14.0%
of the Seer	+79 Stamina, +53 Critical Strike Rating, +62 Spell Power	12.0%
of the Sorcerer	+79 Stamina, +53 Intellect, +62 Spell Power	12.1%