1/4" Mini Die Grinder • Grinds, smooths and finishes rough areas when space is limited• Ball bearing construction for longer tool life• Rear exhaust directs air away from work surface• Throttle lever enables positive speed control Collet Size 1/4" (6mm) Free Speed 25,000 rpm Avg. Air Consumption 4.0 cfm(113 l/min) Air Pressure 90 PSI Air Inlet 1/4" NPT (PT) Hose Size 3/8" ID 1/4" Mini Die Grinder ...