E-A-R Skull Screw earplugs by 3M are an excellent choice for work applications involving dirt, grime, and other contaminants. The foam tips with twist-to-fit grips allow for easy insertion without direct contact. The screw design is more literal than it seems, the plug twists into the ear to form a seal. Appeals to young workers and compliant with the law, providing a noise reduction rating of 30 dB.

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