Latex free, kink resistant star lumen oxygen tubingnStandard connectors for universal fitnFor use with most oxygen concetrators, conservers and regualtorsn7 foot lengthnWestmed #0007, Pack 5nKink resistant 6 channel star lumen oxygen tubing. ** For medical hygiene reasons, once sealed polybag has been opened, this product cannot be returned, per Amazon Hazardous Materials policy**