Product review (5 stars): Fits NPT Threads for the Flare Fitting and the Expanded Tubing Fit my Tubing Perfectly !
So Far so good... the Flare Nut portion fit the Male Flare Fiting, plus 1, the 1/4"Expanded Tubing portion fits the 1/4" Tubing very well, plus 2... !

I would say this part works and is a winner for sure.

I will up date after I Silver Solder the Expanded Tubing Ends to the 1/4" Tubing.