Custom-fit Replacement Headgear for F400, F500 Series ORS NASCO lightweight design|Tinted lenses are polarized

Custom fit Replacement Headgear for F400, F500 Series ORS NASCO lightweight design Tinted lenses are polarized lightweight design Tinted lenses are polarized for superior optical clarity Scale Applications General Purpose Arbor Diam [Nom] 1 4 in Arbor Thread TPI or Pitch 1 4 in Stem Big Catalog YES Brand Weiler Catalog MPI Catalog Construction Catalog NO Country of Origin US Dia 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