Light Obsidian Belt

Light Obsidian Belt is mail waist armor that supplies DPS in the form of increased Attack Power and critical strike chance, as well as increasing all resistances.

Source
Light Obsidian Belt is crafted by Blacksmiths with a skill level of 300.

The components are:
 * 14 Small Obsidian Shard
 * 4 Enchanted Leather

The plans are sold by Vargus in the Cenarion Hold in Silithus. You must have Honored reputation with the Cenarion Circle to purchase these plans.