3M E-A-R PD-01-001 Classic Earplugs Refill BottleCode: 670393000 The 3M E A R Classic Earplugs are disposable and designed for insertion into the ear canal to help reduce exposure to hazardous levels of noise and loud sound up to 31 dB SNR. Colour: Yellow Each Reduces noise levels up to 31 dB (both corded and uncorded), tested to EN 352 2: 2020 Soft energy absorbing foam provides a low equilibrium pressure making it one of 3Ms most comfortable earplugs Moisture resistant making them less likely to