Use E A R Pushins Mushroom Shaped EARform Foam Uncorded Earplugs (1 Pair Per Poly Bag, 100 Pair Per Box) universal Uses standardsingle edge razor blades Color:Hi Vis Yellow Vest W Green Bag Uses standardsingle edge razor blades 12 Yellow Markers: This pack includes 12 yellow markers with a chisel tip for bold lines and a waterproof ink that dries quickly eliminates fear of ear contamination EARform foam tip is shaped and sized to mold comfortably to fit virtually every size earcanal Stem allows for better hygiene The E A R yellow color is your assurance of proven protection Simple to use design and ultra soft performance