Ceramic Road Stud 1.Ceramic non-reflective pavement markers 2.ceramic base and a heat-fired, opaque, ... weight: about 265gColor: White/ YellowSpecifications:Ceramic non-reflective pavement markers consist of a heat-fired, vitreous, ceramic base and ... heat-fired, opaque, glazed surface.Ceramic non-reflective pavement markers glazed finish protects against weathering especially during rain, excellent ...