Build from the most authentic Vintage correct parts ava. Those Parts are 3D scanned for the most accurate dimensions possible, from org. 1960's Gretsch Pickup Parts! All materials in the Pickups were analyzed, Cover, Baseplate, Nylon bobbins, Butyrate Spacer even the magnet were analyzed from the original materials and components. All parts are engenieered all of the components to be within 90% of the original. We spend a lot of time into reseach to make a really great Vintage Sounding Fitertron Pickup.