This is a useful product to have, it's a battery post & terminal lug cleaning tool. It uses wire brushes to clean your car's 12V battery post and cable terminals. You can a find similar tool at Amazon (affiliate link): [ Ссылка ]

Very useful and handy, this two in one tool removes film deposits and corrosion build up from both battery cable terminals and battery posts. The cap pulls off easily to reveal the brush used for cleaning terminals. The opening found on the bottom of the tool was designed to fit securely around any model battery post. To operate, place the tool on a battery post or inside a battery cable terminal and rotate clockwise and counter-clockwise several times. Check battery cable terminals and battery posts often and remove any harmful residue to keep all your battery connections running at peak efficiency.

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