specification: 4cmx10m 6cmx10m 10cmx10m Absorb material created by surgery in the mouth; Prevent fluids or material from entering the oesophagus or lungs; Prevent escape of gases from around tracheal tubes and stabilise artificial airways;The sponge material is impregnated with a radiopaque material such as barium sulfate.Packing: 1pc/box, 40boxes/ctn. If you want to know more please contact us. ...