3M™ Combat Arms™ 393-2022M-50, 4.1 Probed Test Earplug, 50/CS First Aid 3M SKU: 7100217692

3M SKU: 7100217692

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3M SKU: 7010312368

3M SKU: 7100228016

3M™ Combat Arms™ 393-2022M-50, 4.1 Probed Test Earplug, 50/CS First Aid 3M SKU: 71002176923M SKU: 7100113006 Lead Time: ~2 days 3M Combat Arms 4. 1 Probed Test Plugs, size medium are a specially probed version of the standard earplug. This product works with the E A Rfit Validation Sysem and allows you to conduct an earplug fit test for the 3M Combat Arms 4. 1 earplug 3M PSD products are for occupational use only.; 3M E A Rfit Test Probes for CAE 4. 1; 50 pair per case; NOTE: 3M strongly recommends fit testing of hearing protectors.