... sand or fracture rock surface. 2)Powerful hydraulic ,motor drive,high efficiency SPECIFICATION FOR AUGERHole diameter330mmHole deepth2000mmspeed1000mm/minoverall length2857mmoverall width1297mmoverall heigth400mmoverall ... for GM750 GM950 GM1605FEATURES powerful hydraulic drilling, motor-driven, high efficiency, high accuracy vertical WORK PLACE Farms, gardens, asphalt surface, the ground ...