Description
Recognized by most metal-sensing systems, these earplugs feature an implanted stainless steel ball bearing in the plug and metal particles in the cord. 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. NRR 33 dB. CSA Class AL. Test compatible with 3M™ E-A-Rfit™ Validation System.
