D-Series Head (Resident Evil 7)

"D-005" is written on the label. It's hard to imagine how this could be used for anything.

Image of D-Series Head
The mummified arm of an old bio-weapon dubbed the D-Type.

This is one of the components needed to create the Serum. This along with the D-Series Arm must be given to Zoe so she can synthesise the cure.