What is the use of Mouthpiece for a Horn and how get it?

Question

How you can get this ítem and what is the use?.

Answer 1

• You can get one  Mouthpiece for a Horn every 24 hours (Real time) and per character from a  Box in Lower Roshamuul.

Yellow Circle is the Box (Next to  Gederas).

Green Circle is the boat (Next to  Captain Chelop).

•  Mouthpiece for a Horn can be used with a  Crude Horn of Bone to create a  Crude Horn with Mouthpiece on the Roshamuul Quest.

Answer 2

You can use this item in a crude horn of a bone then you can use these horns on the wall for inquisition gold (100 each), inquisition gold you can exchange for clusters of solace (100 gold = 1 cluster) and in turn you can exchange clusters for umbral creation.