Heavy Silithid Carapace

Heavy Silithid Carapace is the hard shell of a silithid and is used in several leatherworking patterns.

Source
This item is found by skinning silithid mobs in Silithus.

Leatherworking

 * Sandstalker Bracers
 * Sandstalker Breastplate
 * Sandstalker Gauntlets