Watco Danish Oil (Medium Walnut), Great Neck 3/8" Ratchet & Drain Gun from the Long Beach Car Swap Meet -- February 10, 2019

This is the brand of rub-on oil that I like to use.  Although this can is very beat up, it's almost full and the stain is in good condition.  Already used it on some wood tool handles and it works well.

Had never heard of this product.  It turns out it's for clearing clogged drains.  It can be a sink drain or any other tube that's clogged.  The CO2 cartridge is pretty high pressure (800 psi?) so you also don't want to over pressurize tubing that's not able to handle high pressures...  The consequences could be bad.