Compatibility Assurance: Specifically designed for Wisp Nasal Mask, this short tube features an outer diameter of 22mm and a length of 18.5 inches. It requires connection to a 22mm (inner diameter) hose prior to device attachment, ensuring optimal functionality. Convenient Quick Release: Equipped with user-friendly side buttons, this tube allows for a hassle-free disconnection, particularly useful during nighttime interruptions. Simply press the buttons gently to detach the tube, facilitating a quick and easy process. Please note: slight physical color differences do not affect use. Color: As Shown Material: Plastic Package Contents: 1 x Connecting Hose Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3cm.