Makita GA9071X1/1 230mm Angle Grinder 110v GA9071 230mm Angle Grinder has been developed based on the current 9040 series. Features Active Feedback Sensing Technology (AFT): Shuts down the tool if the rotation speed suddenly slows down. FEATURES Mechanical Brake Handle type - D Shaped Rotatable main handle Soft start Anti-restart function Double Insulation Constant speed control Re-designed shaft lock Torque limiter Anti-vibration housing for reduced vibration levels SPECIFICATION Bore Diameter: 22.23 mm Max Wheel Thickness: 6.5 mm Mechanical Brake: Yes Max Wheel Diameter: 230 mm Input Wattage 110v: 2,200 w Input Wattage 240v: 2,800 w No Load Speed: 6,600 rpm NOISE & VIBRATION Noise Sound Pressure: 91 dB(A) Noise Sound Power: 102 dB(A) Noise K Factor: 3 dB(A) Vibration K Factor: 1.5 m/sec² Vibration: Surface Grinding with Anti-Vibration Side Grip 4.9 m/sec² Vibration: Surface Grinding 5.1 m/sec² Vibration: Disc Sanding 3.1 m/sec² Available In 110v & 240v