Helmet Type: Auto-Darkening Welding Helmet. Number of Arc Sensors: 4. The new & improved VIKING 2450, our lightweight premium helmet series, offers an excellent blend of optics, comfort & versatility. VIKING 2450 Street Rod Welding Helmet. Anything not shown in photographs. This product was previously used. The condition is good due to imperfections such as scrapes, scratches, and stains from prior use. Please see the pictures for further details.