Moldex 6420 Rockets Corded Earplugs — NRR 27 niosh-approved It carries an end-of-service-life indicator

It carries an end-of-service-life indicator (ESLI) for mercury

work in confined areas

TPR dorsal armor

and moisture-wicking performance fabric keeps the wearer drier

Since this title states no UL rating

Moldex 6420 Rockets Corded Earplugs — NRR 27 niosh-approved It carries an end-of-service-life indicatorEDITORIAL REVIEW: 4. 5 5WC Safety Review Moldex 6420 Rockets Corded Earplugs Best For: corded reusable flanged hearing protection at NRR 27 dB with a retention cord. Not For: non noise hazards, or noise that earplugs alone can't bring under ~85 dBA (add earmuffs). Bottom Line: a solid corded reusable flanged plug at NRR 27 dB the cord earns its keep on jobs where dropped plugs get lost. Editorial assessment by Steven Eaton, WC Safety editor. Scoring