Old vortex type gearcase
Transmission Type:Automatic Centrifugal 
Transmission Ratio:30:1
Boring Roting Speed (rpm):180-210rpm
Boring Rotate Direction:clockwise
Engine Model:1E44F-5,TU style
Displacement (CC):52CC
Max Power (kw/r/min):1.95kw/7000rpm 
Max Torque (N.m/r/min):2.45
Max Horsepower(PS):2.5Hp
Starting System:Re-coil
Cooling System:Air-cool
Ignition System:C.D.I
Spark Plug: L7T
Fuel Mixed Ratio:Gasoline(25):2cycle oil(1) 
Fuel Tank Capacity (L):1.2
Package Weight:13.6Kgs
Machine carton size:40x41x30cm
Drill Bit Dimension:Height:80cm/100cm
Diameter: 80,100,150,200,250,300mm,400mm