Pack of 25 Disposable Cardboard Mouthpieces Hugemeidical (Compatible with Contec Spirometer Sp10) Go to amazon.com Related posts Top spirometer sp10 for 2022 FeaturePack of 25 Disposable Cardboard MouthpiecesFit for CONTEC SP10 DescriptionPack of 25 Disposable Cardboard Mouthpieces