3M PELTOR, Hard Hat-Mounted Earmuff, 25 dB NRR, Communication Headset - 406W28|MT73H7P3E4D10-NA - Grainger
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3M PELTOR LiteCom Plus Headset MT73H7B4610NA, Neckband Style Hearing Protection, 2-Way Radio, Noise-Cancelling Speech Microphone, Hands-Free Protective Communication, Green: Amazon.com: Tools & Home Improvement
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