<b>MEDIHEALER SUPPLY </b><br> *This filter kit is a generic product Produced and Supplied by Medihealer！ <br> <br> <b>PACKAGE CONTENT</b><br> 1 * Adapter<br> 1 * Check Valve<br> <br> <b>ATTENTION</b><br> Mask need to be disconnected while connecting heated tubing to your machine. <br> <br>