The only disposable metal detectable earplug on the market today! All the economy, safety, comfort, attenuation ... and it's detectable, too. All these great features come together in the new LASER-TRAK (NRR 32)! The only earplug that is both disposable and detectable. Comfortable styling that also provides high attenuation in tandem with detectability. Made of bright and intensely visible orange and blue coloring for extra visibility in food processing environments. Nonferrous metal is highly detectable. Disposable box of 100.