Specification:Diameter50MM*Height50MM

Material:Optical Glass of Highly Crystal Silicon

Color:White/Yellow/Green/Blue

Characteristics:

1.Excellent weathering resistance and long life span

2.Fine wear resistance and chemistry stability.They are able to withstand the erosion of tire,sand,different kinds of solvent and oil fuel.Moreover they also have strong resistance to acid rain as well as salt fog.As a consequence,they can be used in various kinds of severe road conditions for a long time

3.Safe,reliable and strong warning function