At the heart of each drum is the legendary 6-ply Gretsch-formula maple/gum shell with its 30-degree bearing edge, the exclusive "Silver Sealer” interior finish and rugged 4mm die cast hoops. The custom drum building team in Ridgeland, South Carolina uses time-tested, classic finishing techniques such as hand-rubbed stains and nitro-cellulose lacquers. Gretsch’s nitron-finishes are some of the world’s finest, offering additional durability and a vintage look requested by many top drummers. Gretsch takes pride in knowing that USA Custom owners can sit down every day and literally play the kit of their dreams.