Specification of the Kobe GD2206L die grinder:
Free speed: 22,000rpm.
Collet size: 3 and 6mm.
Air inlet thread: 1/4 NPT.
Air hose size (ID): 10mm.
Air pressure: 90PSI.
Air consumption: 4CFM*.
Noise level: 93dB(A).
Sound power level: 103dB(A).
Vibration: 5.4m/s.
Overall length: 170mm.

*Based on a 15 second cycle per minute average use.