Blue Dragonscale Shoulders

Blue Dragonscale Shoulders are mail shoulder armor with Intellect, Spirit, and Arcane Resistance. It is part of the Blue Dragon Mail armor set.

Source
Blue Dragonscale Shoulders are crafted by Leatherworkers with a skill level of 295 who also have the Dragonscale Leatherworking specialty.

The pattern drops off Cliff Breakers in Azshara.