Shakes or Wobbles problem
2001 Kia Sportage 4 cyl Two Wheel Drive Automatic 94300 miles

We tried to work on the fuel filter of my 2001 Kia Sportage today, but apparently we need a special tool to open it. We were able to remove it from the fuel line, but the tool is needed for us to go further. Been to Autozone, etc. Been online to various repair forums and most say it's a simple plastic tool I need. One person said he bought a tool for a different filter and filed it down to fit.
I know the tool goes and I'm supposed to depress tabs with it and push in towards the filter to open it. I cannot find anything about the tool I need, though, aside from what I've mentioned, and the two auto stores I visited today were no help at all.
If anyone can explain or tell me about the kind of tool I need, I'd appreciate it. If it is something I can get at an auto store, I'd prefer to go there than to a Kia dealership, where prices are out of this world for parts/tools/repairs, etc. Thanks for any help you can give me.