Drilax&trade; 6 Inch Professional Quality High Density Diamond Coated Flat Lap Lapping Lapidary Wheel Disc Glass - Jewelry - Polishing - Tool Grinding Sharpening Metal Back 1/2" Arbor Multiple Grit Version Available (GRIT0600) Abrasive Disc Wheel Diameter : 6 inches Arbor Hole Size: 1/2 inch Diamond Coating Density : High High Precision Lapidary Grinding Glass - Stones - Rocks - Jewelery Making - Metal Tool Sharpening - Grinding Compatible with Worksharp Tool Sharpeners Professional Quality Electroplated High Density Diamond Coated Flat Lap Lapping Lapidary Glass - Jewelry Polishing - Tool Grinding Sharpening Metal Back Disc Horizontal Wheel 60, 80, 100, 150, 240, 320, 500, 600, 800, 1200, 1500, 3000 Multiple Grit Version Available Abrasive Applications: Grinding - Polishing - Sharpening Diamond Coverage: Over 97% High Precision Lapidary Grinding Glass - Stones - Rocks - Jewelery Making - Metal Tool Sharpening - Grinding Use: Mecanically Clamped to Master Lap