Features: High-quality Material: Made of #45 Carbon Steel with diamond sand coated to enhances the cut efficiency and wear off resistance, long-lasting for use. Diamond File Set: 10 Pcs Different Shapes designed for hard-to-reach & odd-shaped objects. Perfect Design: Soft Non-slip PVC Rubber Grips, effectively reducing the pressure on your hand while using, more convenient for operation. Best Choice for You: Professional and hobbies use precise needle file; Small diamond needle file for craft and delicate applications. Specifications: Name: Diamond file, diamond irregular file, diamond file Material: Diamond Specification: approx. 3x140mm Shape: circulars knife shaped curved file with various shapes Widely Usage: Diamond Needle File are for Glass, Ceramics, Metal, and Hard Wood or Jewelry Carving, shaping and material removal, and cleaning. Specifications: Material:#45 Carbon Steel Size:Approx.3x140mm/0.12x5.51in Shank Diameter: 3mm/0.118 "; Length: 140mm/5.5" 1set Diamond Needle File(10pcs) Package Includes: 1set Diamond Needle File(10pcs) note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.