Title: Simple and works well
Review: This hitch ball cover works to cover the hitch ball, of course, but the main function is to secure and cover the trailer light connector. It keeps dirt, road salt and water out of the connector quite effectively and so prevents corrrosion. Note that it fits a standard four-wire connector, but is not big enough for the larger four-wire connectors. I've had this for 6 or 7 years and it has held up well.
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