I just found this tool in Home Depot that is used with a Vice-grip pliers to tighten PEX fittings on 3/8", 1/2", and 3/4" fittings. For the few times that I will use this tool, $24.76 is a good investment for emergency water leaks. On the HD web site, it is almost $50, might have been a miss price at our store. If I was in the trade, this would not be a tool to buy, but for the few times that I will use it, this tool should work fine. Just thought I would pass the info on.