The most common last-mile fiber assembly I have seen in use is called flat-drop. It is flat, and it is optimized for use on the drop to the customer premises.

The most common last-mile fiber assembly I have seen in use is called flat-drop. It is flat, and it is optimized for use on the drop to the customer premises. There are two (fiberglass?) rods and between them runs a loose tube fiber bundle with typically 6 fibers in it. Good picture here: https://www.novalight.com/Drop-Cable-Fiber-Optic-Flat-Toneable-6-Count-006EB1-14101A20.aspx https://www.novalight.com/Drop-Cable-Fiber-Optic-Flat-Toneab... The fiberglass rods provide excellent crush and cut resistance, as well as bend radius control.