CoProof 1/2” Tandem Mason Jar Thumpers for Wide Mouth Half Gallon Mason Jar This unit allows you to infuse your spirits with fresh or artificial flavors. Also can be used as just as a 1/2 gallon thumper. Alcohol, Distiller, Moonshine, for Wide Mouth Half Gallon Mason Jar 1/2 inch pipe off the copper lid with 90’s and unions. Each unit come with 2-90’s soldered, 316 stainless steel wide mouth ring and wide mouth silicone seal, one union soldered and one loose union per order to attach to your equipment. This gives you the ability to run 1, 2 or all 3 thumpers at once. Or none. CoProof 1/2” Tandem Mason Jar Thumpers for Wide Mouth Half Gallon Mason Jar This unit allows you to infuse your spirits with fresh or artificial flavors. Also can be used as just as a 1/2 gallon thumper. Alcohol, Distiller, Moonshine, for Wide Mouth Half Gallon Mason Jar 1/2 inch pipe off the copper lid with 90’s and unions. Each unit come with 2-90’s soldered, 316 stainless steel wide mouth ring and wide mouth silicone seal, one union soldered and one loose union per order to attach to your equipment. This gives you the ability to run 1, 2 or all 3 thumpers at once. Or none.