VeriShield™ 100 Series Passive Earmuffs, 30 dB, Black, Multi Position, VS130M Dielectric no checkout Scale Applications General Purpose Arbor 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 Articulating hinged design ensures proper placement all day long Metal rivet hinge ensures long lasting protection while kneeling or walking Specially designed Quick Snap clips ensure quick and easy removal Straps stay aligned with your legs in any position Built with strong and neckband styles Large dimension range provides comfortable fit that is 17% more adjustable than earlier versions Wide cup opening area increased by 16% over earlier versions New unique memory foam combines denser and softer foam than previous models