Highest quality danish drill bit sharpeners. Uncomplicated – KEF drill grinders are based on a well proven grinding method which always results in flawless and accurately ground drill points. KEF Sharpeners are pre-set for grinding twist drills, for drilling in steel and iron, with point angle 116° – 118° and clearance angle 6° – 8°. The simplified design ensures that a wide range of different drill sizes can be ground without complicated and time consuming re-setting. Therefore unskilled operators can also obtain good results.