Description:10pcs 3x140mm Diamond File Needle Handle Files Abrasive Tool Jewelry Engraving Fixing FilesSpecification:Material:Diamond needle fileShank Diameter: 4mmLength: 160mmQuantity:10pcsShape:Flat Parallel、 Flat Taper、 Half-Round、 Three-Square、 Square Form、 Round Form、 Oval FormFeatures:High hardness and durability with diamond material.Diamond Needle File Rasp Set  for jewelery glass jade grinding、 for mechanics、 electronics repair、 woodworking and other applications.10 different shape can meet your different demands.Package included:1X Diamond Needle File Set(10pcs)