Portable drill bit re-sharpener, twist drill grinder MR-13A 1.Grinding is accurate and rapid, easy operation with no skill to grind. 2.Economical price that greatly reduces the cost and improves the use effect. 3.With diamond grinding wheel, it can be equipped directly with an accurate angle and long service life. 4.The electrically controlled and powerful DC motor: stable frequency, strong horsepower and long service life. 5.Bearing shaft and locking unit. 6.The machine is set up with the function of adjusting a point (central point) size, which can effectively coordinate with the material of drill hole and the rotation speed. It can control the quality precision and prolong the service life of the drill bit. Model MR-13A Grinding Range Ф3-ф13(ф15) Point Angle 100(95)°~135° Power AC220V Motor 120W Speed 4400rpm Dimension 32*18*19 Weight 9kg Standard Equipment grinding wheel :CBN (for HSS)×1 Eleven collets: ф3、ф4、ф5、ф6、ф7、ф8、ф9、ф10、ф11、ф12、ф13 collet chuck:(ф2-ф14)×1 Option Equipment grinding wheel :SD (for Carbide) collets: ф2、ф2.5、ф3.5、ф4.5、ф5.5、ф14、ф15 collet chuck:ф15