"The #1 reusable earplug in the world! Triple flange design allows for a comfortable, snug fit. Cord reduces the chance of earplugs falling into the work area. NRR 21dB. U.S.A. Hearing Protector Type: Ear Plug, Noise Reduction Rating (NRR) (dB): 21, Adjustable Fit: One Size Fits All, AM/FM Radio: No, Pairs (qty.): 1, Disposable: No, Battery Required: No, Case Included: Yes"
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