3M EAR[TM] Classic Earplugs 311-1101 with Cord 311-1101 1 Pair

Catalog number: 311-1101 Features: ●A classic EAR［［TM］］ earplug. ●Soft material reduces the feeling of pressure on the ears. ●Sponge-type earplugs with an NRR rating of 29 dB. Specifications: ●Cord: Yes (630 mm) ●Size: Free ●NRR rating (dB): 29 ●NRR rating: 29 dB ●Sound insulation performance based on ANSI S3.19-1974 Materials/Finish: ●Earplug body: Polyvinyl chloride (PVC)