Ensure your battery is at operating at peak performance with the Schumacher BAF-BI Terminal Cleaning Brush. Featuring a durable, compact metal case, this pocket-sized brush includes stiff chrome bristles that easily remove dirt, grime, and buildup. To use, simply remove the cap and extend brush for detail work or place the brush hood over the terminal and twist side to side or up and down for leveraged cleaning power. Safe for use on both positive and negative terminal posts.