... 1.8, 85/2.2, 90/2.3A, 100/3.1, 110/2.8, 120/3.0 and 130/3.2.Equipped drilling rod with two ... Pneumatic Roof Bolter, higher output power, high rotate speed and drilling power; convenient operation and maintenance to the air & water ... -70/1.8,MQT-85/2.2,MQT-90/2.3A,MQT-100/3.1,MQT-110/2.8,MQT-120/3.0 ... and MQT-130/3.2. And each model can be equipped with drilling rod with two connection types, B19 ...