3M 19087, 1100 Probed Test Earplugs 393-2010-50, 10 Pair/Bag, 5 Bags/Case, 50 Pair/Case, 7000002409

3M 1100 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 1100 and 1110 earplugs.