Ntn 4T L814710 Tapered Roller Bearing Cup, 4 5 16 in OD, 0.593 in Cup Wd, 0.593 in Overall Wd, 4T L814710 G4025397 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 More corrosion resistant than stainless steel 5938 Country of Origin Japan ) 4 5 16 Bearing Width (In