Details Firm, yet flexible stem for one or two hand insertion Soft foam stem for secure grip No roll down of soft foam tip helps keep ear tip clean Good for workers with gloved or dirty hands Good for workers with gloved or dirty hands Good for workers with only one free hand available for inserting earplugs Foam encapsulated construction Compatible with the 3M™ E-A-Rfit™ Dual-Ear Validation System DOSH SIRIM Approved 3M™ E-A-R™ Flexible Fit Earplug HA 328-1001 are our safety ear plugs made from a patented foam formulation which makes them fully washable and reusable. They feature soft foam tips and a flexible fitting stem for easy insertion using one or two hands. The foam tip conforms to the unique shape of the ear canal to help block out noise. Available in an uncorded case of 400 or a corded case of 500. Featuring patented technology, The 3M™ E-A-R™ Flexible Fit Earplug has a soft foam tip and a flexible foam-covered fitting stem that allows easy insertion into the ear using one or two hands. The shape of the earplug tip along with the soft conforming foam helps to provide a snug yet gentle fit that helps reduce exposure to hazardous noise levels. The no roll-down design of the foam tip helps keep ear tips clean when hands are dirty. The cord keeps earplugs readily available and helps keep foam ear tips clean between uses. The Flexible Fit Earplugs are well suited for activities that require gloves or cause dirty hands or situations when only one hand is free to fit the earplugs. The Noise Reduction Rating is 30 dB when tested using two-hand insertion method and 25 dB when tested using one hand insertion method. Fit test probes are available to conduct fit testing using the 3M™ E-A-Rfit™ Dual Ear Validation System. The patented design and innovative thermoplastic materials make this earplug one of 3M's most versatile and durable push-to-fit style earplugs. Workplace applications can include assembl, blasting, cleaning, demolition, electrical, facility maintenance, grinding, machine operations, painting, sanding, and welding. These earplugs may be appropriate for the following industries: automotive, construction, general manufacturing, metal fabrication, military maintenance, repair and operation (MRO), mining, oil & gas, pharmaceutical, and transportation.