The glass road stud even reflects the weaker light at the perimeter of the headlight beam, can be seen from 360° after the beams fall directly on the stud. Show the hazard at road layouts, junctions and curves at the range of the vehicle headlights. Superlative Reflectivity values even on blind summits and bends. Operational life is comparable to road surfacing materials. Small profile suited to two-wheeled road users. Heavy-duty toughened glass body