I've done a few ProPex water filter installations for Well water into the house using both 1" and 3/4" AquaPex. So much easier than all the glueing mess of PVC and no burring the house down with a torch and Copper fittings.
The tool comes with 1/2", 3/4" and 1" expanders, the tool, two batteries and a charger.
The 3/4" was fine and simple. Though the 1" you could see that the tool was at its limit. At first I thought it was the battery, but that was not the case. It worked fine for the 1", just a bit longer than the 3/4" I know you can buy larger adapters, though I don't know if this tool will do them.