Specification:
There's seven sizes option for the mask. The 2-6# are conventionally equipped with a colored hooking ring. The 0 and 1# colored hooking ring are optional according to customer's requirements.
Item  | specification  | Intend For  | Joint size  | 
  | PVC anesthesia mask - 0#  | Neonate  | 15mm  | 
  | PVC anesthesia mask - 1#  | Infant  | 15mm  | 
  | PVC anesthesia mask - 2#  | Pediatric  | 22mm  | 
  | PVC Anesthesia Mask - 3#  | Adult-S  | 22mm  | 
  | PVC anesthesia mask - 4#  | Adult-M  | 22mm  | 
  | PVC anesthesia mask - 5#  | Adult-L  | 22mm  | 
  | PVC anesthesia mask - 6#  | Adult-XL  | 22mm  |