drill should be packed in a special packing boxes, to avoid vibration collide.

  Drill is mounted on the front end of the drill, rotary crushing coal or rock cutters. Solid material is used in the drilling of through holes or blind holes, and is able to have a hole reaming tool. The drill is a rotary cutting head end has the ability through the milling tool or Rolling then by quenching, heat treatment is made after grinding, drilling for metal or other materials on a very wide range of its use, can be used in the core drilling bit , lathes, milling machines, hand drill and other tools machine. When the digging operation, the drill bit rotation around the vertical axis, while for axial movement. The soil is cutting torque and axial force at the bit role, was destroyed in the extrusion and centrifugal force to work loose leaf and stir chopped, pressed to form a soil pit wall flow, while the elevator to the surface along the page. When the earth moves to free Pit stop the flow at the time, Drilling Tools  to the centrifugal force pulverizer was thrown around the pit, complete the digging process. Drill slowly lifting the box, the four legs of the box corresponding drill holes into four turntable rig, according to the choice of the appropriate size drill core drill box, lifting the drill core box drill box into the body and then to groove and drill drill core box corresponding convex tip installed, will drill into the box drill, drill that card on the turntable heart. Then turn on the drill spin coupling nut drill pipe.