the item is AS-BW-C7 , the sign is 400x270x850mm, the net weight is 23.3kg
it has spikes which can stop the vehicles by breaking into the tire when the vehicles are driven away be force , it is with light weigh and dimension easily and convenience for taking along . it adopts the rocking handle to operate the two works , making it more convenience . with the rubber on it , it can prevent the scratch on the wheels .