Description: Aroad brand Reflective Road Studs Material: Plastic(ABS), Aluminium, 3M reflective crystal lattice, Solar. Specification:100*100*18mm, 110*100*35 mm Use: Use for center line, dividing line and edge line of cement or asphalt road. Characteristicú¦Lucency exceed 600mcd/lux, high coefficient of glisten intension, resistant acid rain, chemistry impregnant and oil, endure grinding for wheel of vehicle and sand.