Custom fit Replacement Headgear for F400, F500 Series ORS NASCO flannel lining Flame retardant treated Built in face warmer flannel lining Flame retardant treated Built in face warmer petroleum based lubricant compound fortified with graphite and metallic flake Inert and will not evaporate or harden in extreme cold or heat For use in assemblies Deeply offset pliable headband fits head contours comfortably Overhead band with multiple adjustments helps position the glassholder for the best view of the weld and a comfortable working position Exclusive “free floating” arms balance and stabilize the helmet while minimizing pressure points Strip proof ratchet head size adjustment provides small increment sizing