The standard by which all CPAP/BiPAP tubes are measured, the 6 Foot Smooth Bore Tube is a great solution for most users. Our Hose Tubing is made of high quality, long lasting materials. The smooth bore inner core and crenelated outer surface combine to create a durable, flexible tube that provides a whisper quiet connection between your mask and your machine. These tubes are re-usable and washable with sealed 22MM molded cuffs. They will fit any system which uses standard CPAP/BiPAP tubing.