It is used on roads or complexes to provide high visibility guidance at night or on harsh weather days The cat eyes used in the road stud glow and provide good amount of visibility Color: Red or White or Yellow Size: 115 mm x 90 mm x 17. 5 mm Weight: 110 gm per piece As per ASTM D - 4280 The road reflector studs can bear severe impacts and its specific reflective panel of the studs provides very high reflectivity