By popular demand we have had a small run of these made in 14mm thread to suit NZ Market. Aluminium Centering Flange, Re-Introduces Zephyrs Original Centering Flanges…….created back in the 90’s. now available again. If you are do a lot of polishing and/or you prefer to run your airways centerless, this is the set up for you. Thread on design holds your airways securely and lost nuts to worry about.