Reflective Aluminum Road Stud. Size: 100*100*20mm. Material Aluminum. Weight: 360g/pcs. Packing: 50pcs or 100pcs/carton. Color of reflector: Yellow white red. Raised pavement Road Marker Stud. Size: 100*100 or 150*150mm. Material: Cast aluminum for stud and glass beads cat eye reflector 3pcs of 7 glass beads reflectors.