Techtongda 220v Heavy Duty 125mm Circular Saw Blade Grinder Rotary Angle Mill Sharpener Voltage220V Grinding Wheel Size4.92"(12.5cm) Bore Size of Grinding Wheel1.26"(3.2cm) Adjusting Range of Grinding Wheel+/-20 degrees Handle Turning Angle30 degrees from left and 45 degrees from right