Blue Removal System allows you to rapidly remove hot blue, cold blue, parkerized and other factory finishes. The Blue Remover instantly removes the finish and does not require intense or prolonged scrubbing. The Stabilizer prepares the metal for refinishing and is chemically compatible with Blue Wonder Re-Bluing Kit, but can be used with any refinishing method. Includes double-ended nylon bristle brush to work chemicals into intricate areas. Each bottle is 4 oz.