TRUSCO bulk purchase earplugs with metal balls and cord, 100 pairs, TEK-31HBOX, 1 box

Catalog number: TEK-31HBOX Features: ● Provides stable and excellent sound insulation performance from low to high frequencies. ● Contains metal balls to react to metal detectors. ● Made of high-density material, these earplugs fit snugly into the ear canal and are smooth and soft. ● Ideal for preventing foreign objects from entering. Specifications: ● Type: Corded ● Cord: Yes (680mm) ● Size: Free ● Color: Blue ● NRR value (dB): 31 ● ANSI compliant ● Disposable type Material/Finish: ● Earplug body: Polyurethane (PUR) ● Cord: Polyvinyl chloride (PVC) ● Copper ball built-in