Nasal Oxygen Cannula catheter-1 Consist of: Soft Tube, nasal suckers, thin tubes, connector, Y shape part, fix ring. Specification: Soft Tube about 1.9m in length, with 6 protuberant veins That stand out at the inner surface, this can help to prevent from flexure. Thin tubes about 50cm in length(for one), the nasal suckers are soft and comfortable. Length can be adjusted according to specific requirement. Sterilized by EOG. 2. Oxygen Mask catheter-2 Consist of: Connector, soft tube, face veil(cover) with or without astomization device, elastic loop Specificaton: Clear and soft vinyl veil is comfortable for patient. And it's transparent to observe patient's situation easily. Aluminium nose clip is adjustable and fix to comfortable position and shape. No smell, the tube is with 6 protuberant veins that stand out at the inner surface, this can help to prevent from flexure, long 1.8m~2.1m Sterilized by E. O. G