Airstream Mouthpieces - 3 Lengths The Airstream replacement mouthpiece, with the signature oval opening, is available in 3 lengths: 3.5", 4.5", and 5.5." A mouthpiece protector is included. Airstream mouthpieces will thread directly onto some blowsticks. If the fit is loose, simply wrap some black waxed hemp around the blowstick threads and twist the mouthpiece on for a secure fit.
