www.phcppros.com/articles/5827-ay-mcdonald-fast-connect-fitting

AY McDonald Fast Connect Fitting
August 15, 2017
Experience a leak free joint and a quick installation with the new Fast Connect Fitting. The fittings come in sizes ¾ inch, ¾inch x 1 inch, and 1 inch. The products behave like a standard three part coupling, but with one-third the amount of rotations required. The fitting coupling consists of two brass components, two compression gasket assemblies, and one plastic spacer.
Complete with a tighten-to-stop feature and no-lead brass material, the Fittings are also the preferred choice when coupling two pieces of copper or when CTS PE pipe is required.
AY McDonald
Learn more about the fittings at AY McDonald's website.