For grinding HSS and carbide engraving cutter as well as single lip or multiple lip cutters of various shapes such as radiuses cutters or negative taper angle of cutters. The universal index head is provided at 24 positions so that any particular angle of shape can be obtained, free 3600 or 100 rotation is allowed for grinding End Mills、Twist Drill、Lathe Tools, only replace the attachment to the index head without any complex setup.  Model MR-U3 Max. collet capacity Φ18mm Max. grinding dia. Φ18mm Taper angle 0~ 180 (degree) Relief angle 0~ 45  (degree) Negative angle 0~ 25  (degree) Motor 220V/380V 50HZ 1/3HP Grinding spindle 5200rpm Grinding wheel Φ100×50×Φ20 Dimension 54*42*39cm Weight 56 kg Standard Equipment 5 collets: ф4, ф6, ф8, ф10, ф12 Grinding Wheel ×2 Twist drill grinding attachment×1 End mill grinding attachment×1 Lathe tools grinding attachment×1 Option Equipment collets: ф3,ф1/8, ф5, ф7, ф9, ф14, ф16, ф18