Screw tap sharpener This screw tap machine is special for tap grinding, precision and quick, simple operation, no need skills can grinding, save cost and improve the efficiency. The Diamond griding wheel can be used repeated,high precision, and long service life. The electronic control type powerful DC motor: frequency stability, HP is strong, can be used for long. Capacity M3-M16 power AC220V/120W Speed 4000RPM Grinding wheel CBN or SDC Machine size 320*210*200 Net weight 10KG Gross weight 12KG