Our Classic Car batteries are not produced by an automated assembly line; each battery is painstakingly hand assembled, inspected and tested to insure top quality. POLY TAR** duplicates the appearance of the old style tar material that got sticky, dirty and sometimes leaked acid, but without these obviously undesirable qualities. When you see POLY TAR**, you know you have the finest in appearance, quality, and durability. The caps are of the correct color and design for each battery and they are made using the highest quality material. They are officially licensed by the big three because of the expert craftsmanship and manufacturing techniques.