Southwire 68932301 Armorlite Metal Clad Armored Cable, MC, 12 AWG 2C+G, 250 ft, Gray Yellow Conductors, Aluminum Jacket, 600V J1214ASD Pairs Per Package 500 Compatible Pairs Per Package 500 Compatible Dispensing System One Touch(TM) Item Ear Plug Dispenser Refill Color Yellow Series E A Rsoft Standards CSA Class AL Cord Options Uncorded Metal Detectable No Insertion Method Roll Down Earplug Color Yellow Earplug Pair Pack Type Loose Earplug Shape Bullet Earplug Material Foam Earplug Packaging Bulk Box Refill Type Cartridge Refill Compatible with Manufacturer Model Number 391 0000 Noise Reduction Rating 33 dB Reusability Disposable Includes Dispenser Number of Elements 4 It's commonly used to carry power in commercial and residential applications where physical wire damage is a concern Div 1 Standards UL Listed Country of Origin United States