Injector

An injector is a junk item in Fallout 4.

Gameplay
The injector appears to be a modernized syringe, designed by the Institute.

Crafting
The injector can be broken down into its individual components for use in crafting:

Locations
Can only be found in the Institute.
 * Three in Sublevel 21-D.
 * Two in the Institute reactor.
 * One in Institute BioScience.
 * One in the FEV lab.
 * One in the Public Works maintenance.