... bump 1.Manufacture price 2.Material: intensive rubber 3.Varied size 4.OEM availab Advantage: 1. Speed hump is made form ... and other places such as city intersection, highroad crossing, toll gate, garden, village, parking lot, and gas station, etc. It creates ... 4) The fixer and the hole must be matched in size 5) fixer for asphalt roads : expansive screw (standard parts, the ...