The Airplaco Pumpmaster MJ-17 Mud-jacking/Slab-jacking Grout Pump is used f or slab-jacking/mud-jacking concrete lifting concrete leveling concrete raising slab lifting slab leveling slab raising void filling and general pressure grouting. Long Life technology makes the low-maintenance Pumpmaster MJ-16 the most efficient mud-jack on the market. Great to start your own business in slab-jacking mud-jacking concrete lifting void filling and pressure grouting. The self propelled 12hp Airplaco Pumpmaster MJ-17 is big enough to handle any slab-jacking job and saves you from needing a forklift and cement truck. The MJ-16 pumps up to 160 cubic ft of grout per hour (4.5 cubic m) and requires very little maintenance making it perfect to build your business around or add to your existing business.