... work and promoting work efficiency.The regular model of this ramp is: width-2.08m, length-11m, adjusting height range- ... .Hydraulic pump:America brand,double-acting,two hydraulic cylindersGrating:meshwork steel block on the surface, serrated for traction,self-cleaning, ... high intensive channel steelSafety chain:standard safety chains hold yard ramp securely to the trailer or dock.Others: Solid tyre, ...