How to get Dual Keres Prime Blueprint in Warframe?

Dual Keres Prime Blueprint is an item dropped from Void relics.
You can find the list of relics below, and click on the links to see how to get them.

Relics dropping Dual Keres Prime Blueprint

Other items:
Dual Kamas Prime Handle - Dual Keres Prime Blade - Dual Keres Prime Handle
Residual Boils - Dual Zoren Dagger Axe Skin Blueprint - Dual Kamas Prime Blueprint