Electro-hydraulic rectangle grab is a kind of efficient tool for loading and clearing up waste or sundries, which is suitable to the crane with single drum used on the special working site such as reservoir, river course, freight train. The grab structure is simple, the main components of hydraulic system are imported from German brand product, which have reliable performance, easy operation. The grab usually has three-eight jaws. The lifting capacity of crane is normally 12t~40t.