Adjustable Venturi Mask

Two available types:
 
1. A type with below 6pcs oxygen concentrations
2. B type with below 7pcs oxygen concentrations
 
Made of clear, medical-grade PVC
Adjustable nose clip, elastic strap
Green transparent color
With 2m oxygen tubing
Anti-crush tube can ensure oxygen follows even if the tube is kinked.
Packing: 1pc/poly bag, 100pcs/ctn
EO Sterile