Nose Clip McKesson Rubber, Disposable, White Plastic For Spirometry (200/pack)Features McKesson Nose Clips Easy to use nose clip for spirometry testing Reduces air loss through the nasal cavity for accurate readings Ideal for use during breathing treatments with Peak Flow Meters White plastic design White rubber nose pads help provide professional use comfort and maintain positioning effective testing Spring action for effective positioning Comfortable fit for all sizes For single professional use use Not Made with Natural