1940 was a landmark year for both Ford and Mercury in styling, even in the smallest details like dash knobs. The artdeco design trend of the day is perfectly captured in these beautiful, original-style knob shapes now brought to you in durable, machined aluminum. They look, work and feel excellent on any Ford or non-Ford cars and trucks. Our Fordy-style dash knobs fit up to 3/16" diameter shafts, perfect for any of our dash switches with shafts. Knobs can also be drilled to fit much larger shafts. Fastens with 8-32 set screw.