Comprehensive Set: Includes a short tube and elbow compatible with N20 and N40 masks. Enhanced Durability: Made with advanced materials, the short tubes are reinforced for increased strength and resistance to wear, ensuring reliable performance over time. This improvement helps extend the product's lifespan while maintaining consistent functionality. User-Friendly Design: Designed to match the original components, these replacement parts offer a secure fit and simple installation. They can be easily replaced without the need for special tools or technical expertise. Optimized for Comfort: The upgraded elbow design improves mask fit, helping to minimize noise and reduce air leakage. This results in a quieter, more comfortable experience, supporting better sleep and effective therapy. Color: Transparent White Material: Plastic Package Contents: 1 x Short Tube and Elbow Note: Package includes only the items listed. Other accessories are not included. Note: Lighting and display settings may cause slight variations in color between the image and the actual product. Measurement error tolerance is +/- 1-3 cm.