FirmFit Earplugs, Foam, Orange, Corded no checkout Gas lenses provide a more Gas lenses provide a more efficient stream of shielding gas to the welding process The gas lens virtually eliminates turbulence in the gas shielding stream as it emerges from the nozzle Two piece construction Sanding Arbor Diam [Nom] 5 8 in Arbor Thread TPI or Pitch 5 8 in 11 Big Catalog YES Brand SPIRALCOOL Catalog MPI Catalog Color Black Construction Catalog NO Country of Origin US Dia requires less pressure to roll down and slow recovery rate allows for plenty of time to correctly insert in ear canal Distinct warning color makes compliance checks easy Excellent protection in most medium to high noise environments Easy to insert