For Digital Spirometer (SB45890S). Pkg. of 50. WARNING: Choking Hazard. Small Parts. Not for children under 3 yrs.
Replacement Mouthpieces
SKU: SB49366S
For Digital Spirometer (SB45890S). Pkg. of 50. WARNING: Choking Hazard. Small Parts. Not for children under 3 yrs.