These are the Adjustable Hose Claps are designed for use with all CPAP Pro & ApneaPAP "No Mask" Setups. In use the Hose Clamp holds the No Mask's breathing tubes in place.
USAGE: Two clamps, with fittings as shown, are included in each pack. For best results replace on average every 6 months. For complete instructions review the documentation that came with your equipment.