Standard DOT Reflective Beads. Sand like texture. Same glass beads used on interstate, highway and local traffic lines. Meets all Federal and State specifications and can be used in inter-mix or drop on applications. Makes paint reflective.
Sizes are 20-325 US Mesh, 45-850 Microns, Roundness >= 70%. Refractive index is >= 1.51. Uses include traffic, signs, as well as art and craft. Sold in 1/2 pound, 1, 2, 3 pound increments.