3M™ E-A-R™ Classic™ Metal Detectable Earplugs, Hearing Conservation 311-4101 in Poly Bag 2000 PR/Case
These metal-detectable foam earplugs were specially developed for food processing and other industries where it is critical to keep earplugs from contaminating products and processes. ∙ Implanted stainless steel ball bearing in the earplug and metal particles in the cord.
∙ Poly bag keeps each pair of earplugs clean before use.
∙ Slow-recovery earplug foam is flame-resistant and water-resistant
∙ Noise Reduction Rating (NRR)*: 33 dB. CSA Class AL.
∙ Test compatible with 3M™ E-A-Rfit™ Validation System.
*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™."