Maybe you are talking about one of the ground terminals found in the attached Delphi Grounding Systems catalog, such as these:
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I don't think you can find those particular ring terminals anymore. Best bet is to use a more modern ring terminal found in the
Aptiv Global Connection Systems Catalog, in particular p. 9-3.
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To crimp any of these well, properly, you need a proper crimper which usually go around $100. If that's not for you, you might want to just head to local hardware store or Amazon and find a ring terminal like one of these that can be crimped with a less costly crimper:
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