MISSING PIECE:    Long Metal piece through the headset

Hello,

The Break wire was stuck through this piece and so I could not take it out or get the chance to cutt the ends off.
Anywhere I may find, or know what its called to purchases or replace the front of the bike?

Myself:

New at restoring this bike I found, (long time back)
Used pieces of younger brothers old bike to give tires treds and tire tubing