Capacity Bolt Size/Capacity: 1”(25.4MM) Avg.Air Con.:9 Air Inlet:1/4” Air Pressure:90PSI Free Speed(RPM):3,800 Max Torque:1,200 Sound Level Db:96 Vibration(M/S2):6.1 Packing:4SETS/CTN/21.4KGS/1.3’