Plastic Speed Breaker Dimensions - 500 Lx400 W x 75 MM. UnFilled Road hump / road speed breakers are made of with UV resistant coloring agent, and with reflectors. Speed Breaker Bump are installed Main gates of any building complex / apartment / company to reduce the speed of the moving vehicle it can be used near security check post. Speed breaker made of premium quality plastic material Durable, High load bearing capacity, Weather proof 1 meter contains 4 humps 2 Black & 2 Yellow