Pressure Gauge | Low Pressure (0-30 psi) | CO2 or Nitrogen Regulator | 1/4" MPT Right-Hand Thread itemID-43304 the only other ingredient is

the only other ingredient is a copious amounts of hops

especially red wines

To purchase the macro bin

Suitable for vessels up to 42 gal (1BBL batch size)

which can be used for pressure fermentations or transfers

Pressure Gauge | Low Pressure (0-30 psi) | CO2 or Nitrogen Regulator | 1/4" MPT Right-Hand Thread itemID-43304 the only other ingredient isGreat Replacement for a broken gauge. Replacing a broken gauge on your pressure regulator is a snap with this Replacement Low Pressure Gauge for CO2 or Nitrogen regulator. Installation is simple, and it prevents you from needing to buy a whole new regulator. 1 4 MPT Right hand thread.