Classified by function:mechanical grabs,360°rotation hydraulic grab.
 Classified by tooth:two teeth,five teeth,seven teeth.widely used in carry and load cane,timber,stone.Scrap metal processing and other special operations.
Classified by shape:Shell type grab,orange-peel bucket.The former is made up by two intact bucket,
the latter is made up by three or more jaws.
Classified by drive way:hydraulic bucket and mechanical bucket.
Especially suit for excavate foundation pit,excavate deep pit and load or unload soil、sand、coal、broken stone for train or truck.