Wrench to replace the output filter.
In order to replace the output filter of your GCE Zen-O or GCE Zen-O lite concentrator, you’ll need this wrench.
GCE Zen-O / Zen-O lite Spanner Wrench
The output filter is located under the cannula outlet of the GCE Zen-O or GCE Zen-O lite portable oxygen concentrator. The manufacturer recommends replacing this filter at least once a year. Replace the filter sooner if necessary. This wrench helps you to disconnect the cannula outlet, so that you can replace the output filter.