3M™ E-A-Rsoft™ Earplugs AV 311-4110, Metal Detectable, Corded, 2000 Pair/Case

Implanted stainless steel ball in the earplug Standard cord, not metal detectable Polybag keeps each pair of earplugs clean before use Regular size fits most ears Noise Reduction Rating* (NRR): 32 dB. CSA Class AL Test compatible with the E-A-Rfit Validation System 3M™ E-A-Rsoft™ Metal Detectable Earplugs AV were specifically developed for the food industry, where it is critical to keep earplugs from contaminating products and processes. Note: the cord is NOT metal detectable 3M™ E-A-Rsoft™ Metal Detectable Earplugs AV feature an implanted stainless steel ball bearing in the plug, so they can be recognized by most metal sensing systems. The cord is NOT metal detectable. *The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduciton provided, if you do not fit test the earplugs with a system like E-A-Rfit. 3M is Leading the Advancement of Hearing Conservation