Craftsman's Writ - Plated Armorfish (quest)

Objectives
Deliver 30 Plated Armorfish and the Craftsman's Writ - Plated Armorfish - to Packmaster Stonebruiser at Light's Hope Chapel in the Eastern Plaguelands.

Description
The bearer of this writ is entitled to payment in the form of an insignia of their choice upon completion of the contracted work order. Work Order FS-12: 30 Plated Armorfish. All filled orders should be delivered to Packmaster Stonebruiser at Light's Hope Chapel in the Eastern Plaguelands. Contract is null and void if tampered with or damaged. -Dispatch Commander Metz, The Argent Dawn

Progress
Filling a work order, ?

Completion
You really don't know what these are for?  Like I'm going to tell you!