12 mm, 16 mm
I was trying to find this product in India from quite a logn time and found in India only with Indiefur. The delivery was on time and the glassware reached me in perfect condition. i will highly recommend this product who want to have inline co2. the Co2 mixes well with this method. n
Excellent product. Does the job of a CO2 diffuser as well as a glass outflow for filter.