3M E-A-R Flexible Fit Earplug HA 328-1000, ANSI, Uncorded, Polybag, 400 Pair/Case dipole-antenna Frequency Range: 403-470 MHz UHF

Frequency Range: 403-470 MHz UHF band

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3M E-A-R Flexible Fit Earplug HA 328-1000, ANSI, Uncorded, Polybag, 400 Pair/Case dipole-antenna Frequency Range: 403-470 MHz UHFNote: This product has been discontinued by 3M. Please contact customer service for a suggested replacement alternative. Firm, yet flexible stem for one or two hand insertion Soft foam stem for secure grip No roll down of soft foam tip helps keep ear tip clean Good for workers with gloved or dirty hands Good for workers with only one free hand available for inserting earplugs Noise reduction rating (NRR) 30 dB (two hand insertion) and 25 dB (one hand