... Tool is used in coal and stone, candrill roof bolt hole, blend and install resinic rolf bolt. QMZS1.7/11( ZQS ... side anchor supporting for 60Mpa( ≤f6 ) stone, candrill roof bolt hole, blend and install resinic rolf bolt.Characteristics: Small, light, easy ... tail six side sizes Mn19Complete machine weightkg11±1 Pneumatic Drilling Rig