Allstar ALL13012 12V Electric Helmet Breather with Reusable Filter Breather has a self-contained, 12 volt fan with a reusable filter Features an rf connector for easy unrestricted helmet removal The 4 inch fan wire accepts the 24 inch pigtail (included). Pigtail has very simple red (+) and black (-) wire hook-ups Replacement breather filter (Allstar part 13013) is also available separately Sold each