Knob, Resistance

This part is NO LONGER AVAILABLE. You cannot purchase this part. Can I still get this?

Listed on the following equipment:
FreeMotion - s5.5 - SFEX559120
FreeMotion - s5.5 - SFEX559121
NordicTrack® - GX 5.5 Sport - NTEX059110
Reebok (Icon) - 510 - RBEX058130

* Images may not be identical to part.