I'm going to sweat a 1/2" piece of copper with a Male Adapter Fitting to thread into the drop-ear for my tub spout.
I purchased this: 1/2 in. Copper Pressure Cup x MIP Male Adapter Fitting
Later online I found this: 1/2 in. Copper FTG x MIP Fitting Adapter Fitting
Both seem to appear to do the same thing, yet the latter is 4 times the price of the other with what appears to be just a little more copper.
What's the difference between the 2? Is one better for my application?