QED Metal Detectable Disposable Corded Ear Plugs SNR39db

These QED disposable Earplugs have an attenuation of SNR39, H38, M37 and L34, for PPE protection against noise.
 Corded for convenience, they can be hung around the neck when not required and reinserted when needed. 
These Earplugs are detectable, so that they can be traced with a metal detector if accidentally lost and are supplied in a Box of 200.