Overview Reviews Product Description 3M E-A-R Skull Screws Earplugs offer noise attenuation with attitude. 3M E-A-R Skull Screws Earplugs provide the comfort and hygiene of push-to-fit soft foam plugs with the tough look of threaded metal. Soft foam with tough, mock-metal finish Noise Reduction Rating (NRR)*: 32 dB. CSA Class AL Foam tips stay clean, even when your hands are dirty 3M Safety Products Catalog Product Videos Custom Field Product Reviews Write a Review Write a Review × 3M E-A-R® Skull Screws® Uncorded Earplugs (120 Pairs/box) P1300 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *