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