Features:1. Silicon connectors, high elastic, easy to use.2. Long length up to 1.8m/5.9ft, free to roll over while sleeping.3. Flexible hose design, with good suppleness, easy to pack and store.4. 22mm international universal standard connector.5. Sterilized and sealed packaging, safe for using.Specification:Condition: 100% Brand newMateiral: PlasticLength: Approx. 1.8m/5.9ftInner Diameter: Approx. 22mm/0.9inchPackage Weight: Approx. 135gApplication: for household noninvasive ventilatorPackage List:1 * Tubing (Without piezometer tube)Note:1. Please tear the packaging bag along the v-shaped opening at the edge of the packaging bag and avoid cutting the package with sharp tools such as scissors or blades to avoid damaging the product.2. Connect the product to other accessories or machine, please tighten all connections to ensure no air leakage and loosening3. Before every time use of the product, please test the product according to the manufacturer's instructions to ensure that the product is compatible with the machine and that there is no air leakage or obstruction.4. When using the product, please ensure that the patient is under the close monitoring.5. Check the product regularly, and replace the product immediately if it is found contaminated or no longer applicable for other purposes.6. When the product is not connected to the patient, protect the patient end of the product to avoid something entering the product.7. The product must be disinfected before repeated use.8. It is recommended to disinfect the product with alkaline disinfectant at a temperature no higher than 75 degrees Celsius or 170 degrees Fahrenheit.