Reflector: Double-way Weight: 250g Packing: 48PCS/CTN, 46x32x21cm Material: Aluminium metal Type: 43/21/4/45/19 beads Beads color: white, yellow and red Almost indestructible, aluminum road stud is made of aluminum alloy with compression resistance over 30 tons Resistant to corrosive effects of salt and grit Good reflectivity equal to intensity