... brakes,gears.pulleys,drums,hooks 3.Limit Protection: load & traversing 4. iso certifi 1.Model CD ... can be mounted on singlebeam,bridge,gantry and arm cranes. With slight modification,it can ... a low speed,it can do precise loading and unloading, mounding of sand box, maintenance of machine ... two speeds,make it lift steadily and accurately.5.Protection: Load limter,traversing limter,Low electric power ...