Standard DOT Reflective Glass Traffic Beads - M-247 AASHTO
Size range: 20-325 US mesh, 45 - 850 Microns or .04mm - .85mm. Refractive index
Same beads that are used on highways/interstates to make the lines reflective!
Sand-like texture, use on top of paint.
Quality glass beads that provide consistent retroreflective values. Great for arts and craft projects, traffic safety, Parking lot striping, signs and other applications.