Cutting disc size : 4 / 100 mm Extended body for better reach and easy access to restricted areas Composite ergonomic grip to reduce cold air transmission to operators Spindle lock system for easier wheel changing 6 position adjustable swivel guard-90 adjustable for better operator protection & greater visibility of cutting operations Built-in speed regulator for easy adjustment Safety throttle lever to prevent accidental start up Rear exhaust with low noise 0.9 HP motor & 13000 rpm High quality bearing (larger bearing size ) for better support internal gears High quality alloy steel for spiral bevels gears with precision teeth design for tool longevity Cutting Wheel = 4 (100mm) Length = 14-1/2 (370mm) Free Speed = 13,000 rpm Avg. Air Consumption = 3.6 cfm (102 l/min) Air Pressure = 90 PSI Air Inlet = 1/4 NPT (PT) Hose Size = 3/8 ID