DESCRIPTION
3M E-A-R™ Classic One Touch Refill 391-1001.
The world`s first foam earplugs and still the most widely used cylindrical earplug today. 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.
Recommended Industry: Commercial buildings, Design & Construction, Heavy Infrastructure, Industrial Maintenance, Marine.