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These test earplugs are modified with a probe tube for use during earplug fit testing with the 3M™ E-A-Rfit™ Validation System
3M PSD products are for occupational use only.
3M™ 1100 Earplugs equipped with a probe tube for fit testing using the 3M™ E-A-Rfit™ Validation System. Cannot be used for hearing protection.