... small gasoline engine, gear box and the special design of the drill. Suitable for land, permafrost, ice ... 2 drill with manganese steel synthesis more hard. The hard soil, super hard soil, clay, such ... users. 4 drill can make people from the heavy manual labor to liberate, widely used in reforestation, ... can double operation, economy and practicality. Note: 1 the use of genuine 2T ( two stroke ) class FC ...