Medline Industries INC. Stethoscope Dual/Head 22 Tubing BlackDual-headed stethoscope features quality construction for the reliability you need. Thick-walled tubing minimizes background interference for more accurate examinations with these medical supplies stethoscopes. Tubing is 22" (56 cm) for easy use. Color-coordinated nonchill rings provide excellent patient comfort.Packaged Quantity: 1/EA"