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.
Dynabrade 95684 1/4" Male Coupler						
																	
Dynabrade 95677 1/4" Male Plug with 1/4" NPT Female Thread						
																	
Dynabrade 95684 1/4" Male Coupler						
																	
Dynabrade 95677 1/4" Male Plug with 1/4" NPT Female Thread						
																	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.
