SparkPlugs Metal Detectable Foam Earplugs, Foam, Metal Detectable with Cord ORS NASCO oily or rusty steel The high oily or rusty steel The high silicon content increases the fluidity of the weld pool Helps prevent the effects of suspension trauma after a fall Allows worker who is suspended to stand up in their harness to relieve pressure A safety accessory that can be attached to most harness brands styles right in the field fun colors provide easy compliance checks Metal detectable for food processing applications The ball bearing and cord are in separate holes so that the ear plugs remain detectable even if the cord is removed The ear plugs are corded to prevent ear plug loss Their tapered shape fits easily in the ear canal and seals gently and snugly without pressure