For 8mm-22mm Twist Drill Re-sharpening , Angle 90óX-140óX (Optional collets and adapter for 3mm-7mm and 23mm-25.4mm drills) Precise Grinding Results , Precision Assurance within 0.02mm Easy to Operate , grinding a drill within 10 seconds. Special Design High Accuracy Alloy Steel Collets Accurate Grinding consumption 0.2mm High Efficiency DC motor Stable Quality GE Diamond Dust Grinding Wheel Considerable Design, Invisible Tool Box, Delicate & Friendly Use Portable Design with only weight 19.8 kgs. 36.5cm X 20.4cm X 22.3cm Weight 19.8kg
