The finisher is a plastic molded part that connects to the bottom of the knob and holds the shifter boot. In my pic it just looks like a thin chrome band under the knob. You turn the boot inside out, slip it over the knob upside down, secure it to the finisher in the channel and then flip it right side out. Here is a pic of one attached to the knob without a boot on it. The knob then connects to the Z just as stock one does.