1.The properly desig ned ventilation fan can maximize the cooling of the motor thus increase the moto r's stability,life and economization of electric energy
2.The external appearance is consistence with somatology easyto handle and labor-saving.
3.The particular power connection is very safe,preventing the cut in the wire.
4.Four different edges (fine,  medium,coarse&rough adges is for your different demands
5.Oiling device can ensure the lubrication,resist the expansion when heated and reduce the vibration,clean and without pollution on the cutting material.