AW Woodwinds FlexMaxx Ligature Alto Sax; reed screw for alto saxophone mouthpieces; open side on the reed (Bright): radiant, assertive sound that is ideal for modern music and solos; closed side on the reed (Focus): warm, focused sound that provides more control and depth; easy handling, fixed within seconds; increased sound volume; suitable for studio and live performances: Maximizes the tonal possibilities of the instrument; improved vibration: Optimizes response and tone stability; includes Tip Saver