3M E-A-R UltraFit 340-4004 earplugs feature a pre-molded triple-flange design that fits comfortably in most ear canals.
Using the 3M E-A-R UltraFit 340-4004 is very easy, just hold the stem and slide the earplugs into your ears. Another advantage is that the tip remains clean even if held with dirty hands or gloves.
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