3M™ E-A-R™ Classic™ Probed Test Plug are a modified version of the disposable foam 3M Classic Earplugs you know and use, specially designed to be used with the 3M™ E-A-Rfit™ Dual-Ear Validation System.
These test earplugs are modified with a probe tube for use during earplug fit testing with the 3M™ E-A-Rfit™ Validation System 3M is Leading the Advancement of Hearing Conservation™.