... material,durable Flexible,no damage on the vehicle Big size,heavy duty Heavy duty Speed Hump/Bump/deceleratorModelPartSizeWeightRemarksRS400BMiddle/Body part500(L) x 400(W) x ... material,more durable;2. Big size,used for heavy duty,suitable for heavy traffic and heavy-duty vehicle;3. Flexible,no damage when the car ... ,provide better vision;7. Easy installation,with expansion screw. Rubber Speed Humps