The Moldex 6644 PlugStation arrives sealed with 250 pairs of Moldex Sparkplugs. Simply attach to the desired wall with the included mounting bracket and you will have an easy and convenient way for workers to access hearing protection. Place in all work areas or break rooms and workers will no longer have to waste time obtaining earplugs. The Moldex Sparkplugs earplugs are designed with a high NRR 33 for the best hearing protection available. Their tapered design will easily fit most ear canals.