20 Mixed Vacuum Brazed Grit 46 Diamond Engraving Burs For Granite and Concrete<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>20 pieces Mixed Set Vacuum Brazed Diamond Engraving Points</li><li>Diamond Grit 46 (Coarse)</li><li>6mm (1/4") Shank</li><li>Head Types: Sphere， cylinder， bullet， needle， taper， round corner， groove， cone， etc..</li><li>For granite， marble， glass， composites， concrete， softstone， terrazzo， gemstone， ceramics， porcelain…</li></ul></div><img src="http://ecx.images-amazon.com/images/I/415HCF98ffL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41i9cWh9dEL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31zWfKh2TBL.jpg" noproxy>