Makita GA9020 230mm Angle Grinder The Makita GA9020 models have been developed as the successor models to the predecessor 9067/ 9069 series models, featuring durability higher than the predecessors. FEATURES Large trigger switch Double Insulation Machined bevel gears Gear housing can be positioned at every 90 degrees SPECIFICATION Bore Diameter: 22 mm Spindle Size: M14 x 2mm  Max Wheel Diameter: 230 mm Input wattage: 2,000 w No Load Speed: 6600 rpm Net weight: 5.8 kg NOISE & VIBRATION Noise sound pressure: 89 dB(A) Noise sound power: 100 dB(A) Noise K factor: 3 dB(A) Vibration K factor: 1.5 m/sec² Vibration: Artificial Wheel: 5.5 m/sec²