The Small Wonder® - Plus cleaning brush kit conveniently offers the Small Wonder® double-ended brush and the valve/contorol head brush together in one package. The Small Wonder® cleaning brush is a specialized, miniature brush for the smallest scope channels (3FR (1.0mm) to 6FR (2.0mm) The valve/control head cleaning brush features a full head of soft bristles to aid in removal of gross material from all control head and valve openings