 the circumference of the tone-hole chimneys was smaller at the point of contact with the leather pads than where they were soldered to the main body of the instrument.Instruments with rolled toneholes have been manufactured by companies including Conn (between 1921 and 1947), Keilwerth, Kohlert and SML (Strasser-Marigaux-Lemaire).As of 2010, there are only two companies manufacturing rolled tone hole saxophones