Techtongda Round Circular Saw Blade Sharpener Water Grinder Grinding Machine Voltage:110V Power:250w Handle Turning Angle :30 degrees from left and 45 degrees from right Revolution :2850rpm Weight:70.4lbs (32kgs) Product Dimension:28.35"x16.93"x11.81"(72x43x30cm) centering arbor size:5/8" (15.87mm) 0.79"20mm0.86"22mm 1"25.4mm1.18"(30mm) 1.57"(40mm)