Product Details : Speed bump Size: 350* 250* 50 mm, 500* 400* 35 mm, 500* 400* 50 mm Key features: 1. Made from recycle rubber with good compression resistance and be soft enough to not make the driver sense of wallop when the vehicle wheels impact the rump 2. Fixed steadily on the ground by screws and is not easy to be flabby when being impacted 3. Special veins on the bump to be against slippage 4. Black and yellow combined to draw attention of drivers and be more well signal at night as the glass beads reflect the vehicle light 5. Special technology guarantee the color durable 6. Low Maintenance and easy installation 7. Suitable for parking lots, residence area, gates of schools and departures, gas station, toll-station and so on