3M™ Earplugs One Touch Refill 1100 is for use with the 3M™ One Touch Pro Earplug Dispenser. Each refill bottle contains 500 pairs of 3M™ Uncorded Foam Earplugs 1100. 3M™ Earplugs One Touch Refill is for use with the 3M™ One Touch Pro Earplug Dispenser 391-1000. Each refill bottle contains 500 pairs of 3M™ 1100 earplugs. Designed to conform to the unique shape of each ear canal, 3M™ Foam Uncorded Earplugs 1110 offer the comfortable fit of soft foam ear plugs for reliable hearing protection. Noise Reduction Rating (NRR)*: 29 dB. CSA Class AL One size fits most Bright orange for compliance sighting Suggested Applications Soft foam and tapered shape fit the ear canal comfortably Corded for convenience and to help prevent loss of earplugs Smooth, dirt-resistant surface for hygienic use