Blew out a water hose....replacements?

OK I was stupid and forgot to put on the flow restrictor for the water supply at the last campground and as a result, developed a leaky toilet fixture. I"m pretty much positive that the supply hose connection is what is leaking. The female supply hose connector that screws onto the toilet fixture appears to be dripping water at the point where it swivels. So I"m guessing that I'll need to cut it off and replace it.

Question: Is this a standard size fixture that I can find at Lowes or Home Depot or is this some RV-specific size hose fixture that I'm going to need to search out at at RV dealer parts department? The fixture itself is plastic and looks different from the female water supply connectors that one sees used for sinks and toilets in houses. But I'm not sure if it really is different.

I can't actually seem to locate this part on the Camping World web site either. Perhaps I'm not looking in the correct spot?

BTW, the toilet is a Dometic Sealand toilet if that makes any difference.