This is the OMS by Miflex High Flexible Inflator Hose Scuba Diving Braiding Designed Hose Features: Traditional rubber with chromed brass fittings Length is measured from end to end of hose Hose lengths range from 22 to 36" Miflex hoses feature a patent pending double nylon safety braiding designed to outperform and outlive traditional rubber hoses. Miflex hoses are 30% lighter than an equivalent length rubber hose and have unmatched flexibility. You can tie a Miflex hose in a knot and be assured of continuous, uninterrupted airflow. Miflex Hoses have a minimum burst pressure of 3600 psi (250 bar), more than twice rubber hoses. "