3M E A R Classic 310 1001 Ear Plugs, Cylinder, 29 dB NRR, Uncorded, Disposable, Yellow, 200 PK 7500PFL Number of Pieces 3 Material Number of Pieces 3 Material Drop Forged Steel Color Black (Handle) Features Drop Forged Steel Shrinking Tubing and Packaging Noise Reduction Rating 29 dB Earplug Color Yellow Reusability Disposable Cord Options Uncorded Earplug Shape Cylinder Earplug Material Foam Pairs Per Package 200 Series E A R Classic Metal Detectable No Standards 29 dB CSA Class AL Insertion Method Roll Down Noise Reduction Rating NRR 29 dB Earplug Packaging Bulk Box Earplug Pair Pack Type Cardboard Pillow Pack Country of Origin United States Earplug Material Foam