Graham Field Dejerine Percussion Hammer with Stainless Steel Needle Cirrus 5 Oxygen Concentrator maximizes comfort and minimizes facial

maximizes comfort and minimizes facial pressure during head movement reducing the potential of your mask leaving red irritation marks upon waking up

Bar graph display

or 3 progressively reflect slowed response of the pressure increase that will take place at the beginning of inspiration

and is impact resistant

Graham Field Dejerine Percussion Hammer with Stainless Steel Needle Cirrus 5 Oxygen Concentrator maximizes comfort and minimizes facialGraham Field Dejerine Percussion Hammer with Stainless Steel Needle Features Hollow stainless steel handle Black rubber bumper Specification Brand: Graham Field Product Type: Dejerine Percussion Hammer Length: 8"