[Diamond Grinding Head Burr]Diamond Mounted used for sculpturing, dressing, grinding and internal grinding carbide in ceramic, glass, precious stone, alloy and many other abrasive materials. [Diamond Materials]Diamond burr set made of diamond particle with reliable quality, thick and durable, wear resistance, high hardness and impact resistance, sturdy enough for fine detail work. [Universal Compatiblity] Diamond grinder bits set is featured with universal 3mm (1/8 inches) grinding drill bits, which with or die grinders. [Multi-functional]Diamond grinding burr bits, extremely sturdy and wear resistance. Great for polishing stone, glass, ceramics, tile, brick,fiberglass, rock. DIY craft, craft modeling, home repair (wood, some plastic and dogs' nails) etc. [Universal ] tool diamond burrs set, Diameter:0.118inch (3mm); Head Diameter: 0.15inch 0.19inch 0.23inch 0.31inch 0.39inch 0.47inch (4mm 5mm 6mm 8mm 10mm 12mm). colour: silver Material: Diamond Package Contents: 1 set x carbide burr set (12pcs) Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.