3M Foam Ear Plugs Corded (NRR 29)
Model No: 3M 1110 (NRR 29)
3M 1110 UF Foam Ear Plugs Corded (NRR 29)
NRR 29) 3M 1110 UF foam ear plugs (corded version of the 3M 1100 ear plugs) are the stiffest of the poly-urethane foam ear plugs. For those who like the feel of UF, but want the stiffness of PVC (which makes insertion easier), the 3M 1110 is a good choice.
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