Stampede Stills Copper 2 Gallon Thumper Herd (FOUR Mason Jar Thumper Kit with DIFFUSERS (Half Gallon)(1/2" piping). Stampede Stills
Amazon.com: 2 Pack Half Gallon Mason Jar - Glass Jar Wide Mouth with Airtight Foam Lined Plastic Lid - Safe Mason Jar for Fermenting Kombucha Kefir - Pickling, Storing and Canning -
Rumble Jar: Half gallon (64oz) size, filter-only (no Mason jar)