- specially probed version of the standard plug
- works with the E-A-Rfit™ Validation System
- allows you to conduct an earplug fit test for the Tri-Flange and UltraFit Plus earplugs
- *The NRR may overestimate the hearing protection provided during typical use.
3M™ Tri-Flange™ Probed Test Plugs are a specially probed version of the standard plug.
3M™ Tri Flange™ Probed Test Plugs are a specially probed version of the standard plug. This product works with the E A Rfit™ Validation System and allows you to conduct an earplug fit test for the Tri Flange and UltraFit Plus earplugs