... 4.Great torque 5.Maintenance convenience A, ZQS-50/1.6Portable Pneumatic Drilling Machine is ... ,Basic performance unit Basic performance parameters model ZQS-50/1.6 Applicable scope MPa 0 ... level dB(A) ≤95 weight kg 9B,ZQS-90/2.4 Portable Pneumatic Drilling Machine detailed ... illustration, C,ZQS-50/1.6Portable Pneumatic Drilling Machineproduct features ...