Avg. Air Con.:4 Air Inlet:1/4” Air Pressure:90PSI Free Speed/Feed Speed(RPM):20,000 Collet Size:1/8”~1/4”(3~6MM) Sound Level Db:92 Vibration (m/s2):8.1 Air Exhaust Style:REAR Packing:20PCS/CTN/14KGS/0.6’