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Understanding Noise Reduction Ratings (NRR) in Motorcycle Ear Plug Selection | by Etdgchgujvc | Medium
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Mack's Maximum Protection Soft Foam Shooting Earplugs, 7 Pair with Travel Case - 33 dB Highest NRR - Comfortable Ear Plugs for Hunting, Tactical, Target, Skeet and Trap Shooting : Amazon.co.uk: Sports & Outdoors
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Browning Hearing Protection for Shooting by Decibullz Custom-Molded Earbuds, 31-Decibel Noise Reduction Rating (NRR), Includes Lanyard and Travel Case : Amazon.co.uk: Sports & Outdoors
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Decibullz - Custom Molded Earplugs, 31dB Highest NRR, Comfortable Hearing Protection for Shooting, Travel, Swimming, Work and Concerts
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