Product Description:Washer for Co2 regulator InletRelated ItemsCOREG CO2 Regulator for Hydrofarm CO2 System COSYS Hydrofarm CO2 (.2-2 cubic feet per hour) with Timer COSYS20 Hydrofarm CO2 (1-20 cubic feet per hour) with Timer COTBDR CO2 tube 1/4" /holes CO20FTDR Tubing / Co2 / 20' drilled
HydroMan