3M™ E-A-R™ UltraFit™ Probed Test Plugs are for use with the 3M™ E-A-Rfit™ Dual-Ear Validation System. Our earplugs are specially equipped with a probe tube for fit testing.
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™