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3M (formerly Aearo) H7A Peltor Optime 101 Over-The-Head Earmuffs, English, 15.34 fl. oz., Plastic, 5.1" x 7.4" x 3.8": Ear Protection Equipment: Amazon.com: Tools & Home Improvement
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Source 3 M PELTOR Optime 101 Earmuffs H7A Noise Reduction Headphones Shooting Protective Earmuffs on m.alibaba.com
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3M PELTOR Optime 101 Earmuffs H7P3E-01, Hard Hat Attached: Science Lab Ear Muffs: Amazon.com: Tools & Home Improvement
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