... : 10mm/12mm 3.Usage: deburring,engraving, grinding on stone, carbide Stone Carving Diamond Tools / Electroplated Stone Carving Diamond Burr1. Shank: 6mm/ 6.35mm2 ... stones, plastic, carbide, metal, glass.4. Diamond grit: 46#, 60#,80#, 120#, 150# 5. Package: Single blister,Wooden box, PVC bag6 ...