Capacity Bolt Size/Capacity:9/16”(14MM) Avg.Air Con.:4.2 Air Inlet:1/4” Air Pressure:90PSI Free Speed(RPM):7,500 Max Torque:420 Sound Level Db:96 Vibration(M/S2):9.0 Packing:10SETS/CTN/27KGS/1.5’