3M PELTOR, Behind-the-Neck Earmuff, 28 dB NRR, Communication Headset - 406W27|MT73H7B4D10-NA - Grainger
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3M Peltor Lite-Com Pro II Intrinsically Safe Two Way Radio Communications Headset MT7H7F4010-NA-50 (NRR 25) - Self-Contained Two-Way Headsets
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3M PELTOR 06710 WS LiteCom PRO III - Headband - MT73H7A4D10-NA: Amazon.com: Tools & Home Improvement
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