A bucket of air
After sucking up a lot of oxygen fillet brazing the mountainhack’s rear triangle, I’m not planning on using the teeny bernzomatic torch to heat the lugs on the kit bike. But I’d run out of oxygen on the big torch, so I had to run over to Airgas to pick up some more poisonous corrosive gas.
Fortunately, the Trek’s sensor-searing red paint doesn’t actually affect anything other than cameras.