Check the listing for details. Duotight Push-In Fitting - 8 mm (5/16 in.) x 9.5 mm (3/8 in.) Reducer - Beer Gas. Condition: New. Listed at 6.00 USD. This Duotight reducer is used when stepping down from 9.5 mm OD to 8 mm OD EVABarrier tubingDuotight offers superior quality when compared to other push-in fittings. Their double EPDM O-ring design provides a more complete and reliable seal, protecting against leaks even when tubing is bent around tight corners. They are suitable for both beverage and gas applications, and are pressure rated to 100 psi. Tubing can be released by simply pushing in the collet and pulling the line out. No need for clamps or cutting lines! Features:Insert tubing and firmly push in to attachEasily release tubing by pushing in the colletSuitable for both gas & beverage applicationsDouble O-rings made from EPDMPressure rated to 100 psi