Robotic bits

The robotic bits is a cut piece of clothing in Fallout 4.

Gameplay
It provides a Damage Resistance of 0 as well as a bonus of +1 to Perception. It appears to have been a piece of "armor" that Nick Valentine would have on him, or possibly drop as a death item, however, it is never referenced in the code. On the body it takes up the eye slot like sunglasses. If added to inventory via console, it won't appear in the Pip-Boy.