These Moldex 6415 Rockets are metal detectable and are perfect for use in food processing operations. Featuring a new cord which is metal detectable even when detached from the earplugs and allows them to be worn around the neck when not in use to prevent earplug loss. The earplugs contain an enclosed metal spring so there is no exposed metal. A triple flange design allows the Rockets to comfortably fit a variety of ear canal sizes, yet still maintain their seal. The design also features an air cushioned tip so workers will be comfortable wearing them all day long. And best of all, these earplugs can be washed and reused to cut down on waste and be environmentally friendly. If you are looking for superior hearing protection, these NRR 27, metal detectable earplugs are an ideal choice.