3M™ E-A-R™ UltraFit™ Metal Detectable Corded Earplugs, Hearing Conservation 340-4007 in Poly Bag 400 PR/Case
These durable, reusable corded earplugs are easy to use again and again, reducing waste. Push-to-fit products provide in-ear comfort and convenience, with the hearing protection you expect from 3M.
∙ Poly bag keeps each pair of earplugs clean before use.
∙ Metal-detectable ball bearing for high detectability.
∙ Single size fits comfortably in most earcanals.
∙ Proprietary, premolded, triple-flange earplug design inserts easily.
∙ No rolling or sizing needed to get a comfortable, protective fit.
∙ Soft polymer is washable and reusable.
∙ Noise Reduction Rating (NRR)*: 25 dB. CSA Class AL.
*The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided.
3M is Leading the Advancement of Hearing Conservation™."