It plugs in to one of these service modules (no clue to the actual name for it). I'm not sure if the crumpled one at the bottom is identical to the one in good condition. It seems to be placed a tad closer to the front edge of that subsection, but it could look that way due to crumpling.

https://img.17qq.com/images/npmdmlc...refresh26966549


I'm almost tempted to think the can could be a filter for stuff going into the boosters, like moisture filters on airbrushes. However, the hose on the bottom of the can doesn't seem to have any fittings to attach to anything, so I've abandoned that idea.

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I love sanding.