Diamond Burr 1.Shank: 6 /6.35mm 2.Diamond grit:46#,60#,80#,100#,150# 3.Usage Deburring,Carving, Grinding, Polishing,Drilling Diamond honing toolItem No. HX311Diamond burr set in wooden case 20pcs/setDeburring Diamond Burr1.Shank: 6 /6.35mm2.Diamond grit:46#,60#,80#,100#,150#3.Usage Deburring,Carving, Grinding, Polishing,Drilling4. Package: Wooden Box