The original upper dash ash tray knobs for the 46-48 Ford were made of plastic and through the years, from sunlight, they have deteriorated and changed color and/or broke and fell apart. This is why we are introducing billet aluminum replacements for these years of cars, machined with the same basic shape of the originals to keep the traditional theme intact. These knobs can be used in many other ways also, such as glove box doors, console ash tray doors, and other areas of your car or truck. The "Traditional Series" 46-48 ash tray knobs are available polished or brushed.