"Bag of 10 pairs of ear plugs are detectable to the ""metal detector ""reusable and TPR with lanyard in the fabric. Ø 7-11 mm. Usable with or withoutcord (9 pairs in the bag + 1 couple in protectionbox reusable). Ergonomic shape that fits any typeof acoustic meatus. Complies with EN352-2 SNR 28 dB H 27 M 25 L 23 ANSI S.3 19-1974 NRR 25 dB."
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