Coiled Tubing Injector Head
The injector head is the mechanism that transfers the force necessary to inject, retract or hold the coiled tubing with precision control while tripping into/out of the well (check pipe tripping guide). It is the main item in the coiled tubing unit and comprises the following two parts:

- The Injector Drive
- The Tubing Guide (Gooseneck)

A Weight Indicator and Stripper / Packer are usually bolted to the injector subframe, directly underneath the drive chains.
https://www.drillingmanual.com/coiled-tubing-injector-head/