Check the listing for details. 3M 318-1000 E-A-R Push-Ins Uncorded Ear Plugs 100/Box. Condition: New. Listed at 41.15 USD. These push-to-fit, corded foam uncorded earplugs are easy to use again and again, reducing waste. Proprietary no roll-down - Poly bag keeps earplugs clean before use - Blue stem makes fitting and removal cleaner and easier. - Noise Reduction Rating (NRR)*: 28 dB. CSA Class AL. - Test compatible with 3M™ E-A-Rfit™ Validation System. *The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided. 3M is Leading the Advancement of Hearing Conservation™.Specifications Brand‎‎ E-A-R™ Category‎‎ Push-To-Fit Earplugs,‎ Hearing Protection Color‎‎ Yellow/Blue Cord Type‎‎ None Electrically Insulated‎‎ Yes Hearing Protection Style‎‎ Uncorded Material‎‎ Polyurethane Metal Detectable‎‎ No Moisture Resistant‎‎ No Noise Reduction Rating‎‎ 28 Decibel Packaging‎‎ Poly bag Product Line‎‎ Earplugs Product Series‎‎ E-A-R Push-Ins Product Type‎‎ Push-To-Fit Earplugs Recommended Industry‎‎ Heavy Infrastructure,‎ Commercial buildings,‎ Design & Construction,‎ Industrial Maintenance Reusable‎‎ No Shape‎‎ Push-to-fit foam Size‎‎ One Size Fits Most