... 1.conpact structure 2.light weight 3.small volume 4.good disassembly Gxy -2K drilling rig is suitbale for industrial and civil ... ,dam,wells,exploration and engeering geological survey work,and small diameter pile hole construction etc..It can choose bits ... ,hard alloy bits,spiral bits while drilling in accordance with different layers.The drilling rig having compact structures and light weight ...