What is a Seat / Key / Choke / Dash Knob?

Click on pictures for more examples

Seat Knob Before Seat Knob After
Key Before Knob With Key Knob After
Choke Knob Choke Knob replaced with Golgotha Skull
Dash Knob for Motorcycles Dash Knob for Custom Rods
Assembly Instructions for
Key Knob with pictures (DSL)
"Download"

Without pictures (Dial-up)
"Download"