I only sell quality parts. Most knobs fit most switch I sell but their is some that don't work out very well. If you like a certain knob, just ask if it will fit the switch your interested in.Most knobs have to be fitted to each switch. I will not sell anything I would not use on my cars. The item "VINTAGE CORVETTE BLACK WIDOW TACH TACHOMETER DRAG RACE GASSER SCTA TROG HEMI" is in sale since Tuesday, September 29, 2020. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Gauges". The seller is "mr-dash" and is located in Ferris, Texas. This item can be shipped worldwide.