The 3M E-A-Rsoft ear plug dispenser refill is made of polyurethane foam, is packaged 400PR/BOT, comes in yellow and meets CSA Class AL standards. Proper sizing is important when buying this part. The size for this product is Large. Some products are single use while others are reusable. This particular ear plug dispenser refill is disposable. Ear plugs can come in many different shapes and colors. This ear plus is barrel shaped.
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