VeriShield™ 100 Series Passive Earmuffs, 30 dB, Black, Multi Position, VS130M Dielectric ORS NASCO Used to cut and trim Used to cut and trim wood and to pull tongue and groove materials together Thin blade allows for access to tight spaces Made of solid alloy steel for long lasting durability and dependability PVC (vinyl) construction provides personal protection that combines flexibility and durability Sealed grommets with adjustable ties Quick suitable for wearers with sensitive ear canals or for wearing with hearing aids Air Flow Control technology for optimum attenuations across all frequencies Available in over the head 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