Diamond Grinding Cups, Drill Bit Sharpener. Size: 7mm -26mm, Shape: Dome, Ballistic. Type: King, SVK, CME, Atlas. Product details. Diamond Grir nding Cups, Drill Bit Sharpener. G200 pneumatic grinding mahcine using all type of Diamond Grinding Cups, Grinding Caps, Grinding Pins, which are made by super quality diamond abrasive materials by ...