The Grafa is a workhorse industrial meck used across the Idunni Consortium for transporting, drilling, and all manner of industrial applications. While these are widely used by the Irontail Prospectors and the Skadi Kindred at large, they were hardly overlooked for the widespread repurposing and refitting into capable, hardy military machines.
The Jotunn package upgrades numerous internal parts to allow better integration with Valkyrie cybernetic interfaces as well as providing greater firepower to make quite capable heavy support platforms.