Specifications: Solar powered aluminum road stud Solar capacitor with 4 led for high performance 145 x 120 x 30 mm Automatic flash at nighttime Clear visibility for all weather conditions Led\'\'s available in range of colors 2 styles available matt finish/polished finish Flashing times 60/70/150/200 times a minute - need to be set at production stage Non flashing also available Approx 18,000 per 20 ft container 30 pieces a carton/each carton 38.5x29.5 x 43.5/23 kilos per carton Manufactured to european standards We produce all kinds of studs, please contact us for more information.