For sale is a complete set of Vintage New Old Stock Sealtight spark plug Insulators. Enough to do a 6cyl 7 male / 7 female. Helps improve motor performance, Saves Loss of Power Moisture, Dust, Oil Proof & just plain looks cool. Can be used on most Classic Cars, Trucks, Tractors, Motorcycles & Boats.....look at my other auctions for more insulators. Please feel free to ask questions.