ESSP 550 Trailer from Neal Asphalt Sealcoating Equipment Created: September 6, 2007 550-gallon capacityESSP 50- or 100-gal. per min. piston pump16 lbs. of sand per gal. capabilityOnce-a-year flush out procedureHeavy-duty agitator drive with infinite forward/reverseHand wand and 75 ft. of hoseNeal Equipment LLC Want to know more about this product? Click here to request more information about ESSP 550 Trailer from Neal Asphalt Sealcoating Equipment .