This is the knob at the base of the seat that you move in order to slide the seat front and back.Be sure to get the retaining clip listed below to be sure your adjusting knob is securely attached.
Fits great, stays in place and does the job.
Good quality repop. They do push all the way down on the clip.
Good quality, fitted 1970 sport roof. Remember when fitting the clip only goes one way
would pass for show quallity.