This product performance is good, the efficiency is high. Mainly uses in harvesting the potato, the garlic, the sweet potato, the peanut and so on underground rhizome crops. Has the harvest efficiency to be high, the breakage rate low, the revolution vividly does not have the vibration, not to stop up the grass, to leak the earth to be quick, the structure is succinct, service life long and so on characteristics. This machines and tools have obtained the National Patent office to authorize the model utility and the outward appearance design two patents