A smooth bore oxygen supply hose to connect the water bottle to the nasal cannula or 1-liter bag-mask.
A smooth bore hose for oxygen machines designed to connect the water bottle to the nasal cannula or 1-liter bag-mask.
A smooth bore oxygen supply hose to connect the water bottle to the nasal cannula or 1-liter bag-mask.
A smooth bore hose for oxygen machines designed to connect the water bottle to the nasal cannula or 1-liter bag-mask.