HUT3000496 Features: -Heat-Resistant Vulcanized Fiber Welding Helmet Shell For Comfortable, Cool, Heavy-Duty Welding.. -VULCANIZED FIBER W/ZANHLOK HG. -Hunstman Contour Comfort headgear and patented Zahnlok size adjustment system.. -UNSPC CODE: 46181700. Product Type: -Welding Helmets.