... gasoline forced, convenient and practical, efficient, easy to carry and field land operations.3.Three kinds of drill bits for different ... -film typeEngine type:Single cylinder,air-forced cool,2 strokeMaxium power:1.56kw/7000rpmDrill diameter:100,200mmNet weight:8.7kgEngine packing ... of the machine, take a break for 10 minute after half hour working.Prohibit shutting down the engine when it is ...