【Universal Compatiblity】: This 6 Foot CPAP tube with19mm Diameter and standard 22mm Rubber End connectors on both ends allows it to fit all CPAP Masks and Sleep Therapy Machines and Pillows. 【 Flexibility 】: The flexibility of this tubing allows you easily move around the pillow and bed without causing a mask leak which will ensure proper sleep therapy. 【Leakage Free 】The 6-foot CPAP hose, along with the easy-grip 22mm connector, ensures a secure seal to prevent air leakage and provides a seamless connection to the machine and mask, allowing for easy installation and removal