3M E-A-R Classic Probed Test Plugs 393-2003-50, 50 EA/Case replacement radio antenna 4-Pole Molded Plug

4-Pole Molded Plug

58 MHz applications with 2dBi gain

combined with the X Series Earmuffs

commercial fleets

3M E-A-R Classic Probed Test Plugs 393-2003-50, 50 EA/Case replacement radio antenna 4-Pole Molded PlugThese test earplugs are modified with a probe tube for use during earplug fit testing with the 3M E A Rfit Validation System 50 PR Per Case 3M PSD products are for occupational use only. *The NRR may overestimate the hearing protection provided during typical use. Earplugs equipped with a probe tube for fit testing using the 3M E A Rfit Validation System. Cannot be used for hearing protection. These test earplugs are modified with a probe tube for use