They are basically a repurposed food saver. The general concept on CURING is to replace the O2 each day or so while it continues to cure. Removing O2 would be helpful when its fully cured but not by much.
Looked those up.... pretty cool!.. Think I'll grab a few of the 1/4 pounders. I sold all my CureTubes from the business, and need something for personal... these look perfect. Affordable too!