Great video from Mountain Glass that shows how to set up your two-inlet (oxygen/propane) torch. It also goes over regulators, fittings, and flashback arrestors. [https://www.youtube.com/watch?v=TwOtt0dqU4I&t=36s][1] [1]: https://www.youtube.com/watch?v=TwOtt0dqU4I&t=36s