... notable decelerate effect, without noise and uncomfortablefeeling2 High intensity rubber, firm and useful, good anti-impact ability 3 Set ... gate, garden, village, To improve life span, the road must be smooth. After drilling, clean Up the holes and ... the bump to the surface Of the road 3) For A type road bumps, use a steel bar or PVC ... easily purchase on local market) safety and stable rubber speed hump