The product is made of glass, the bottom plated with silver, with a high strength, high reflective, do not change the color and other outstanding features.
Thecolors havered, yellow, white, etc.,  We can also be based on customer requires to make the color beads.
Size is D=4mm
It is used on refletor, and it have high quaity can substitute the beads of Swarflex product.