3M E-A-R Classic 311-1110 Corded Earplugs — NRR 29 dura-mesh while European listings show an

while European listings show an SNR of 28 dB — two different scales for the same product

3m versaflo tr-630 standard rechargeable battery — what the listing actually specifies

Also listed as 3m 8210plus n95

black with Scotchlite Ratings ANSI/ISEA Z89

3M E-A-R Classic 311-1110 Corded Earplugs — NRR 29 dura-mesh while European listings show anEDITORIAL REVIEW: 4. 4 5WC Safety Review 3M E A R Classic 311 1110 Corded Earplugs Best For: corded single use foam hearing protection at NRR 29 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 single use foam plug at NRR 29 dB the cord earns its keep on jobs where dropped plugs get lost. Editorial assessment by Steven Eaton, WC Safety editor.